ML20091D791

Technical Rept 91-4, Seismic Activity Near VC Summer Nuclear Station for Period Oct-Dec 1991

ML20091D791
Person / Time
Site:	Summer
Issue date:	12/31/1991
From:	Talwani P SOUTH CAROLINA, UNIV. OF, COLUMBIA, SC
To:
Shared Package
ML20091D789	List: ML20091D786 ML20091D791
References
91-4, NUDOCS 9204130043
Download: ML20091D791 (24)

Text

___ __ . _ _ . ._ _ - _- .. .

TECHNICAL REPORT 91-4 4

SEISMIC ACTIVITY NEAR THE V.C. SUMMER NUCLEAR STATION FOR THE PERIOD  ;

OCTOBER - DECEMBER 1991 BY PRADEEP TALWANI Principal Investigator DEPARTMENT OF GEOLOGICAL SCIENCES UNIVERSITY OF SOUTH CAROLINA COLUMBIA, S.C.29208 CONTRACT NO. N574984 P DO P O 00 95 PDR

TECHNICAL REPORT 91-4 4

SEISMIC ACTIVITY NEAR THE V.C. SUMMER NUCLEAR STATION FOR THE PERIOD OCTOBER DECEMBER 1991 BY PRADEEP TALWANI Principal Investigator and Kusala Rajendran DEPARTMENT OF GEOLOGICAL SCIENCES UNIVERSITY OF SOUTH CAROLINA COLUMBIA, S.C.29208 CONTRACT NO. N574984 k

-J

i INTRODUCTION

- Analysis of the seismic activity near the V.C. Summer Nuclear Station in South Carolina between October 1 and December 31, 1991 is presented in l this report. During this period,14 events were recorded in the vicinity of  ;

Monticello Reservoir, 6 of which were located. The largest magnitude recorded during this period was M t=1.5. There was one other event of magnitude 1.4, located to the northwest of the reservoir.

A revlow of the seismic activity during the year 1991 is also presented in this report. The level of activity, and its spatial distribution are discussed in detail. The performance of various stations of the network during the past year is also presented in this report.

SEISMIC NETWORK Earthquakes during this period were recorded on stations of Monticello Reservoir and South Carolina Seismic Network. The configuration of stations utilized to locate Monticello events is shown in Figure 1 and station coordinates are listed in Appendix 1. The operational status of the network is given in Appendix II. The names of these stations have been changed in this quarterly report to conform with other Southeastern U.S.

Network stations. Thus, the station previously identified as 002 is tenamed MR02 with similar changes for all other stations. The network was fully operational during this period, though the records from MR02 were occasionally noisy and not usable in locating earthquakes.

DATA ANALYSIS Hypocentral locations have been determined using the computer program HYPO 71 ( Lee and Lahr,1972). The velocity model used in the earthquake locations is given in Appendix l!l. The format of the output is given in

.. Appendix IV. The event magnitude was determined from the signal duraticn at JSC using the following relation:

Mt = -1.83 + 2.04 Log D, r

where D is the signal duration (seconds).

1 l

4 1

Monticello Reservoir Seismic Network l 1

i 34.4 l

MR07 l t

(

MR10 MR01 ,

i l

_ 34.3

+

t MR05 JSC

, 5 . 0 kni ,

1 i  :

1

._ 34.2 MR02 A l 1 l I 81.4 81.3 81.2 A Single component

,, $ 3 component ,

Figure 1 Location of Monticello Reservoir area showing seismic stations used ,

lin locating seismicity.

2

_-J

An estimate of daily energy release was determined using a simplified magnitude (M L). energy (E) relation by Gutenberg and Richter (1956):

Logio E = 11.8 + 1.5 Mt OBSERVED SEISMICITY DURING OCTOBER-DECEMBER During this period 14 earthquakes were recorded, of which 6 were located (Figure 2; Appendix V). The located events were of poor quality (C or D).

The largest event was of magnitude M L=1.5 which occurred on October 22 (17:48:08.31 UTC). There was one other event of magnitude Mt= 1.4 , which occurred to the northwest of the reservoir, outside the study area. This earthquake is listed in the study because of the activity in this area during the previous quarter. However, it is not included in the energy analysis. Blasting activity is being investigated to see if these events could be blasts from any of the nearby quarries.

Eight of the 14 events recorded during this period occurred in a swarm on November 16. These events were recorded first at station MR10 and were generally of short duration (Appendix VI). Only three of these events were large enough to be located ( Appendix V; Figure 2). The largest event of this swarm occurred on November 16 (16 : 45 :14.22 UTC) and had a magnitude Mt= 0.G.

The long term decline in seismicity observed at Monticello is continuing

( Figure 3). The seismicity at Monticello seems to have leveled off since 1985-1986 (Figure 4).

CORRELATION OF WATER LEVEL WITH SEISMICITY Monticello Reservoir is a pumped storage facility. Any decrease in the reservoir level associated with power generation is recovered when water is pumped back into the reservoir. There can be normal variations up to five feet per day between maximum and minimum water levels. The water level has been monitored to see if there is any correlation between the daily or seasonal changes in the reservoir level and the local seismicity. Water levels are compared with seismicity in Figure 5. The top panel shows the average water level; the error bars show the maximum and minimum water levels each day. The second panel shows the change in 3

e I

e P:.0 20 0 19.0 18.0 17.0 16.0 22.0 ,

_.24.0

.23.5 e

Q .25.0

_22.5

.22.0

_21.5 21.0 I

e

( 20.5

_20.0

_19.5

_19.0 e,

18 5 V

t8.0

.17.5

_1r.J

_i5.5 16 0 15.5 6 4 ia i 4 4 i i 6 i 6 4 6 O KIL OMET ERS 5 t 1 I t t i Figure 2. Earthquakes located near Monticello Reservoir during the perio October 1 - December 31,1991.

b

~.

y d E

l 1

l 800 --  !

700 -- I

. i 600 --  !

i l E l i:s500 -- -

c*

,i g i

q 400 --

w

-o d 300 --

Z 1

200 --

b _, d '

E .L i - - -

a . . _ .1

.a m.

o- . - - - ' ' '

! 1977 1980' l'.C 1986 1989 1991 l

i j Figure 3. Earthquakes between impoundment and December 1991.

q 5

- - + a' _ - u r -- - -- - - - - . _ - - - - - _ - - - _ _ . _ - - . - - . - - . - . - - - _ . _ . _ . . _ _ -. - - . . . , -

8000 900-- T CUMULATIVE SEISMICITY 800 - -

7000 700 --- - 6000 g

g 600-- -- 5000 E 1 i 5 500 --

J. --4000

{g 400 --

y 3000 Z 300 -_

2000 200 -- '

'l MONTilLY SEISMICITY 1 ,

- 1000 i 100 -- , l .l

' '3 d ,1 E. E I- ds d HL@ a n h _ _ , , _ ,,,,,_q,_, ,0 0 1989 1991 1980 1983 1986 1977 Figure 4. Monthly seismicity (bars) and cumulative seismicity Gine) near Monticello Reservoir since impoundment.

6

\

3 425- -

, l L., #

pe -

" ~~ ~~ ~ "

h424 h'~

~~ "

)h.[

[

eo - - >

2 423-

~

l l l'

422- i

. 421 ;_

274 289 304 319 334 349 364 2 i  ;

e e . . A t- D A h{ A O n n ,! h a eA nb r

- V

[' V y 'h} y v v vv ^

v V7 V y

MUL j y "{

5 1 e i i i 6 2' 274 269 304 319 334 349 364 15- JULIAN DATE:1991 2

2 m

0 12.5-S w

3 0 10 274 289 304 319 334 349 364 g 10<

1:s 8 l

& I

-]

- 6

4

's d 2 Z g .I I 0 * *I 304 319 334 349 364 274 289 ocr NOV DEC Figure 5. Comparison of daily reservoir level, changes in reservoir level, number '

of earthquakes and the log of energy release in ergs per day at Monticello Reservoir. Error bars in the top panel indicate daily iluctuations in reservoir level. l 7

.. .~

water level from day to day. The number of events per day and the log of energy released are shown in the lower histograms, lhese charts include all reported earthquakes listed in Appendices V and VI. The average watre level, daily changes in water level, number of earthquakes and energy relerse are given in Appendix Vil, No systematic correlation was observed between the seismicity and reservoir level fluctuations.

CONCLUSIONS The level of seismicity during the fourth quarter was lower, compa 9d to the previous quarter. The largest recordsd magnitude was Mt=1.5. Most of the seismicity during this quarter occurred in a swarm on November 16, located to the northem part of the reservoir. No systematic correlation was observed between the reservoir level fluctuations and the seismicity.

MONTICELLO NETWORK AND SEISMICITY DURING 1991 Station operational - status The operational status of the Monticello network during the year 1991 is given in Figure 6. Most of the stations have been operational during the second half of the year. Currently, all the stations of the network are working well. The quality of records from MR02 has not been good enough to be used in earthquake locations. Necessary steps are being taken to improve the operation of this station.

Seismicity A total of 92 events were recorded around Monticello during January -

December 1991, of which 54 were located ( Figure 7). Seismicity level was highest during the first two quarters ( Figure 8; Figure 9A,B).

The only event of M t=2 in Monticello region during 1991 occurred during the second quarter ( April 29, 18 : 41: 07.72). This event was preceded by seven foresnocks and 15 aftershocks during the period April 25- May 03 I ( Appendix Vill ). There were six other smaller events which were not located ( Technical report 91-2). The earthquakes during 1991 were scattered around the study region but there seems to be some l

l l.

8

.. _ . _ _ _ _ _ _ _ . . . . __ _ _ . . ~ . _ _ . . . _ _ . _ . . . _ _ _ _ - _ _ . . . _ _ - . _

4 i

MR10 '

I MR07 {

z

,s .

.5 i.m

.F l

ar  ;

&.

. p

]

l l

.31 n.

e JSC y- l 1

i a i i i i i 0 10 26 30 40 50 60 70

% Down time l Figure 6. Operational status of Monticello Network during January 1- December 31, 1991. Quarters 1-4 are from bottom to top, for each station.

9

l l.

22.0 21.0 20.0 19.0 1B.0 17.0 16.0 t  ! 1 1 1 i i 1 1 1 1 1 1 1

_24.0

- , _23.5

_ . _.23.0 22.5

_22.0

-(.y

_2i.5

_ f . ,,

. _2i.0

• 20.5

.iJs .

- 8

.

• k 20.0

-) . . . **.

-> . s.* , s. 5

... 19.0

! _E.0 A

• 17.5

_17.0

_16 5

1. _16.0

_15.5 4 4 i i 6 6 i i i i i 4 i i 3 KILOMETERS 5 t I i  ! I t Figure 7. Earthquakes located near Monticello Reservoir during January 1 -

December 31,1991.

(, 10

9 10 -

8

)

g__

4--

p __

Il 'I Il l l I l ,

l -

o- l l

SEP NOV MAY JULY JAN MAR Figure 8. Number of events per day during January - December 1991.

11

u.e , n..e , n.' ,

"c',"',"c',"c'i? ,.,,,,,,,,,,,,,,,,,81

.u. .

,y,,

. . .u.s "d

. (A) , d (B) _n.,

.u..  % .H . S e

.u . . u

.u..

g 31.8 v .i

/

, .v . . e v.o 4 ..... . , e _n.i t s.2 up a.. e c+ 6

,e .....

,e, g . ...

.. .? ,

e .e .....

- . - = =f 3( "'

.3 e .,...

}

.. i r. i

[N)k

~

.I / .a I *

-n

.a.. ,*] 1. l e to,oirm ~c (1,jo{eiapppp!um

.a.i _

3, . ,,.....,am 3, .

iie i e i i . i i iii i i i i i ei 85 n.e ,,..

o..,... ,.4 , ,7

,.4 u .. , v . . . .. , .... , .... , i,.. , ... , .

4 P 7'934.0 .24 4 23.5 .

.33.5

) 9 (C) , , '_ (D) .,..

,.17. 0 34 0 .

y = c15 p3 .

.31.9 -

lu v.o .v .s

. p( 9 .

.30.1

. . .50.i 30 9 .

.30.0

.. . ... .I . ...

A .l.0 .t. 0 J

r .n..

s .,...

o n (.o .

V ',/ V

) .ir.i .

.ir..

LW / *,,.. -

\ - ,,..

( O K ILOP'C T1 5 5

.ie..

pg,,

,,3,,

, i , , , _,

% 15.5 .

.ti.5 I 34 ' i i i , i , i , i i 34 '

1 Figure 9. Earthquakes located near Monticello Reservoir during :

(A) January - March; (B) April - June (C) July - September and (D) October - December 1991. Symbols (solid dots) used during different periods are not indicadve of magnitudes or depths except in (B).

12

4

.J '

a 50-45-40-3 35-i f30-

}25-

$ 20-I 5

z 15-

.! 10-e 5-l 0 ====

l 3 3 i ,

l- <0.0 0-0.9 1-1.9 >2.0 MaOnitude Range l

Figure 10. Magnitude range of earthquakes recorded during January - December 1991.

15

- - . . - , . - . . - . . . =...

_ _ _ _ _ ~ ~ _ _ - - . _ _ _ ~ _ . . . . _ . . _ . _ _ _ _ . _ _ . . . . _ _ _ _ _ . _ _ _ . _ ~ _ . . . , _ . _ . _ _ _ _ . _ _ _ _ . . . _ . ~ _ . _ _ _ _ _ _ _ _ _ _ _ . . _ _ . _ . . . _ _ _ _ _ . ,

. _ _ . ~ _

i l

I l

i I

I l

l

! Number of Events l 0 2 4 6 8 10 12 14 16 18 20 i i i f I I I t I 1

_f l

l 0 .5 l

.6-1.0 E

x 51.1-1.5 ci.

O O '

1.6-2.0 r

>2.0 Figure 11. Depth distribution of earthquakes located during 1991.

l -

1 ,

. 14 l >

g .- y- -

concentrated activity in the middle of the reservoir (Figure 7 ). '

Activity in this zone wss par 11cularly dominant during the second quarter

(-Figure 9B).- _

The unlocatable _ events were generally of short duration and not recorded

- lon more than one or two stations. The magnitude range of all the events recorded at Monticello is shown in Figure 10. The larger number of events

. recorded _had a magnitude range between 0-1.0.

The__ quality of the located events was generally poor (C and D) and their

~

depths are not considered very reliable. Out of the 54 located events, only 9 were of B quality.; Maximum activity was observed-in the focal depth regions of 0.5 to 1~.0 km (Figure 11). This is not different from the previous ' periods of activity, in conclusion, the activity. during 1991 was not particularly different from the past. several years. The lona term decline in the seismicity at

.Monticello is _ continuing, :with occasional short periods of seismic activity. Earthquakes occurred at shallow depths and were generally

concentrated in the middle of the reservoir.

' REFERENCES i '

Gutenberg, B. and Richter,C.F. (1956). Magnitua and energy of earthquakes, Ann. Geof. 9,1-1.5.

Lee, W.H.K. and Lahr J.C. (1972). A computer program for determining hypocenter, magnitude and first motion pattern of local earthquakes,

! ' revisions-of HYP071, U.S. Geological Survey,., Open-File Report,1G0 pp.

Technical Report 91-2 (1991) Scismic activity near V.C. Summer Nuclear L Station for the_ period April- June 1991.

15

. . ... . . . - . . = . . . . - . - . - .. . . . . . . - - . . . . . . . -

jf! ~i APPENDIX l

..( . . .

.- . STATION- LOCATIONS

- STATION LAT* N LONG W i

JSC 34'16.80* 81'15.60' MRO1 - 34'19.91' 81*17.74' .

MR02 ~ 34'11.58 ' 81'13.81*

MR05-- 34*16.05' 81 20.05' MR07 ' 34 22.23' 81 19.50'

-- MR10 - 34 20.18 .81*20.25'

(

. b } .

g.

W l-i t-16

.1

[ .. _;

APPENDIX ll SElSMIC STATION OPERATIONAL STATUS OCTOBER - DECEMBER.1991 STATION PERCEffT DOWNTIME JSC 0 MRO1 0 MR02 0 MR05 0

- MR07 0 MR10 0 1:

t l

17

(. . .: >

4 t

APPENDIX lil-MONTICELLO RESERVOIR ,

VELOCITY- MODEL Depth to top  ;

Velocity km/sec km 1'.00 0.00

.5.40 0.03 5.90 0.18-  ;

-6.10 0.46.

6.30 0.82 8.10- 30.00 4

, . f: -

e.

18

APPENDIX IV MONTICELLO EARTHQUAKES HYPO 71 FORMAT

.. Column 1 Date Column 2 Origin time (UTC) h m.sec.

] Column 3 Latitude (N) degrees, min.

Column 4 Longitude (W) degrees, min.

Column 5 Depth (km).

Column 6 Local duration magnitude.

Column 7 No. of station readings used to locate event. P and S arrivals from same stations are regarded as 2 readings.

Column 8 Largest azimuthal separation in degrees between stations.

- Column 9 Epicentral distance in km to nearest station.

Column 10 Root mean square error of time residuals in sec.

RMS = RP/No, where Ri is the time residual for the ith station.

Column 11 Standaid error of the epicenter in km*.

Column 12 Standard error of the focal depth in km'.

Column 13 Quality of the epicentral location.

Statistical interpretation of standard errors involves assumptions which

. may not be met in earthquake locations. Therefore standard errors may not

- represent actual error limits.

Note: If ERH or ERZ is blank, this maans that it cannot be computed, because of insufficient data.

19

1 1

.. APPENDIXV MONTICELLO EARTHQUAKT.S OCTOBER.DECEMLER 7991 DATE ORIGIri LAT N LONG W DEPTH MAG NO GAP DMIN RMS ERH ERZ QM -

911022 1748 8.31 34-22.91 61-21.;4 1.75 1.54 8 T.4 3.5 0.07 1.1 1.4 c1 1.3 0.08 1.1 2.2 c1 911116 15 2 28.12 34-20.78 81-19.78 1.00 -0.40 7 156 8 203 911116 1645 14.22 34-20.28 81-20.35 1.99 0.82 0.2 0.18 1.6 1.2 01 0.61 0.21 8 145 1.5 0.12 1.1 2.5 C1 911116 2317 36.30 34-20.81' 81-19.63 0.21 5 209 1.4 D1 911117 014 26.20 34-20.77 81-20.35 0.17 1.1 0.08 2.5 2.80 1.44 8 329 3.8 4. 2 D1*

911119 1738 46.49 34-25.00 81-22.88 7.3 0.14

• This event is not included in the energy analysis.

k t.

" 20

,,_ _ -_ . . ..~ __ _ __ . .

APPENDIX -VI >

LIST OF CVENTS WITH (S P)n2.5 SEC RECORDED AROUND

- MONTICELLO RESERVOIR DURING OCTOBER-DECEMBER 1991 DATE STATION P-ARR. TIME S P(SEC) EP.DIST DUR (S) MAG (s-p)* 8.5 91 10 21 MR07 09 06 45.85 - 1.4 11.9- 12 0.4 91 11 16 MR10- 15 02 35.55 1.5 12.8 13 0.4 JSC 15 02 37.00 91-11 16 MR10 -15 0217.30 5 -0.4 91 11116 MR 10 15 02 28.50 5 -0.4 ,

91 11 16 MR10 15 03 24.15

_ -4 0.6 JSC 15 03 25.65 -

91 11 16 MR10 - 19 09 44.2

_ 5 -0.4 91 12 01- MR10 21 43 01.0 0.55 4.7 5 - -0.4 91-12_17. - JSC 06 20 '45.45 1.1 9.4 10 0.21 4

l S

p 21 pc e 'r+-

appenua vu l'4 .

. Maximum ced minimum wat:r levels, change in water level, number of c:rthqu:kes and energy release (ergs per day) at Monticello Reservoir during October 1 - December 31,1991. Dates are given in Julian Calender.

DATE WL(Max) WL(Min) WL(Avo) CHANGE # of Eqs Log E 274 422.3 424.5 423.8 -0.5 0 0 4

275 421.9 424.3 423.3 0.2 0 0 276 422.1 424.3 423.5 0.3 0 0 277 422.7 424.9 423.8 -0.1 0 0 278 422.7 424.6 423.7 0.1 0 0 279 422.7 424.8 423.8 0 0 0 280 422.7 424.5 423.8 0.8 0 0 281 424 425 424.6 -1.2 0 0 282 424.1 424.9 423.4 1.1 0 0 283 424 425 424.5 -0.3 0 0 284 423.4 424.8 424.2 0 0 0 235 423.5 424.8 424.2 0.2 0 0 286 423.7 424.6 424.4 -0.4 0 0 287 423.3 424.3 424 0.2 0 0 288 423.5 425 424.2 0 0 0 289 423.2 425 424.2 0.4 0 0 290 423.4 425 424.6 -0.8 0 0 291 42?;5 424.9 424 -0.2 0 0 292 423.1 424.7 423.8 0.6 0 0 293 423.4 425 424.4 0.2 0 0 294 424.1 -425 424.6 0 1 12.11 >

295 424.1 425 404 A -0.1 1 14.11 296 424.2 424.9 424.5 . G.5 0 0 297 422.8 424.7 424 0.3 0 0 298 422.6 424.7 423.7 0 0 0 299 422.2 425 423.7 0 0 0 300 422.3 424.9 423.7 0.2 0 0 301 423.1 424.5 423.9 0.2 0 0

'302 422.5 424.9 423.7 -0.1 0 0 303 422.5 424.6 423.6 1 0 0 304 423.2 424.9 424.6 0 0 0 305 424.3 425 424.6 -0.3 0 0 306 424 425 424.3 0.5 0 0 307 423.9 425 424.8 -0.2 0 0 308 424.5 424.8 424.6 0 0 0 309 423.4 426 424.6 -0.2 0 l 0 310 424.1 424.9 424.4 0.2 0 0 311 424.1 424.9 424.6 0.2 0 0 312 424.5 424.9 424.8 -0.7 0 0 313 423.1 424.9 424.1 -0.7 0 0 314 422.4 425 423.4 1 0 0 315 422.9 425 424.4 0 0 0

. 316 423.5 424.9 424.4 -0.1 0 0 317 423.7 425 424.3 0 0 0 318 423.9 425 424.3 -0.1 0 0 l 319 423.8 425 424.2 0 0 0 320 423.7  ! 425 424.2 0.1 8 13.33 22

Y 4 e

424.9 424.3 0 1 12.11 321 423.4 424.9 424.3 0.2 0 0

.. 322 423.4' 424.9 424.1 0.1 1 13.96 3

.323 422.9 424.8 424.2 0.1 0 0 324 423.1 425 424.3 0.3 0 0

- 325 423.3 425 424 0.1 0 0 326 423.3 425 423.0 0.2 0 0 327 423 424.6 423.7 0.5 0 0 328 423 424.9 424.2 0.9 0 0 329 423.2 424.9 423.3 0.3 0 0 330 422.1 424.7 423.6 0.5 0 0 331 422.1 424.2 423.1 1.6 0 0 332 422.2 424.3 424.7 -0.5 0 0 333 422.6 424.1 424.2 -0.1 0 0 334 423.2 424.4 424.1 0.1 1 13.96 335 422.7 423.9 424.2 -0.6 0 0 336 422.7 424 423.6 1.1 0 0 337 422.4 423.4 424.7 0.5 0 0 338 422.5 424.2 424.2 0.5 0 0 339 422.6 424,9 423.7 0.4 0 0 340 422.8 425 424.1 ~-0.5 0 0 341 -423.6 423.9 423.6 0.5 0 0 342 423.1 423.4 423.1 1.3 0 0 343 423.1 424,9 424,4 0.5 0 0 344 423.5 424.5 424.9 -1.3 0 0 345 423.7 424 423.6 0.9 0 0 346 423.7 422 424 424.5 0.7 0 0 347 348 422.4 424 423.8 0.8 0 0 _

424.2 424.6 0.1 0 0-349 423.8 424.3 424.7 -0.2 0 0 350 424.1 423.8- 425 424.5 0.2 1 12.11 351 422.8 424.9 424.7 -1,3 0 0 352 423.5 424.5 423.4 0.9 0 0

-353 424.5 424.3 0.6 0 0 354 422.6 422.8 425 424.9 -0.3 0 0 355 425 424.6 -0.4 0 0 356 423.7 425 424.2 0.1 0 0 357 423.3 422.7 424.6 424.3 0 0 0 358-422.8 423.5 424.3 0.2 0 0 359 422.8 423.2 424.5 0.3 0 0 360 423.5 424 424.8 -0.7 0 0 361 423.5 424.3 424.1 1 0 0 362 423.1 424.8 423.1 0.1 0 0 363 423.2 424.6 423.2 0.1 0 0 364 423.3 424.9 423.3 0 0 365 23

l -

APPENDIX VIII MONTICELLO EARTHQUAKES: JANUARY-DECEMBER,1991 DATE ORIGIN LAT N LONG W DEPTH MAG NO GAP DMIN RMS ERH ERZ QM

, 910104 2115 7.80 34-16.83 81-20.14 0.15 0.99 4 192 1.4 0.07 C1 910106 2132 37.41 34-20.01 81-17.84 2.78 -0.40 6 173 0.2 0.08 1.2 1.3 C1 910107 2053 27.74 34-19.16 81-18.43 0.95 1.02 10 101 1.7 0.09 0.4 2.4 B1

, 910108 326 9.76 34-19.13 81-17.48 0.10 0.01 4 186 5.2 0.08 C1 910219 10 0 29.17 34-19.94 81-19.54 1.15 0.73 9 106 1.2 0.07 0.4 0.9 B1 910219 10 2 45.46 34-20.28 81-20.33 2.60 0.82 9 203 0.2 0.09 0.6 1.0 C1 910223 315 4.79 34 21.03 81-17.84 1.00 -0.11 3 225 2.1 0.08 C1 910226 1735 31.97 34-21.59 81-21.98 1.68 1.15 8 269 3.7 0.08 0.9 2.1 C1 910312 1121 5.19 34-19.73 81-20.35 1.75 0.78 9 194 0.9 0.08 0.4 1.0 C1 910313 9 3 13.01 34-20.28 81-20.35 1.00 0.95 8 203 0.2 0.08 0.5 0.8 C1 910313 2259 34.17 34-17,58 81-17.55 0.87 1.02 5 203 3.3 0.03 0.7 D1 910327 1646 32.66 34-20.46 81-19.97 2.78 0.21 10 153 0.7 0.09 0.6 0.6 B1 910425 1416 41.31 34-19.53 81-20.37 0.23 0.21 5 244 1.2 0,06 0.1 0.1 C1 910429 1113 54.77 34-21.15 81-16.53 0.69 1.72 4 233 5.0 0.21 C1 910429 1251 50.15 34-19.70 81-17.57 1.93 0.82 7 183 4.2 0.07 0.5 2.2 C1 910429 14 3 31.91 34-19.58 81-17.95 0.23 0.44 8 171 3.7 0.10 0.7 2.7 C1 910429 1423 42.66 34-16.90 81-15.70 1.00 0.21 5 172 0.2 0.16 0.8 0.7 C1 910429 16 3 13.10 34-19.22 81-18.70 0.55 0.82 6 154 3.0 0.09 1.2 6.2 C1 910429 1614 51.45 34-19.26 81-38.42 1.11 0.57 9 153 3.3 0.12 0.8 5.0 C1 910429 1841 7.72 34-19.78 81-19.16 0.96 2.00 5 142 1.8 0.05 1.2 4.5 C1 910429 2012 19.31 34-19.49 81-18,64 0.81 0.82 7 151 2.8 0.10 1.1 2.1 C1 910429 2025 56.74 34-23.96 81-19.60 6.84 1.02 5 327 3.2 0.16 D1 910430 332 0.77 34-19.48 81-18.25 0.85 0.21 6 161 3.3 0.10 2.0 C1 910501 44 6.91 34-20.00 81-17.58 2.88 -0.24 6 188 4.1 0.10 1.7 2.7 C1 910501 13 5 55.63 34-19.53 81-18.66 0.63 -0.40 6 152 2.7 0.14 3.8 C1 910502 1035 18.94 34-19.88 81-19.51 2.94 1.18 10 110 1.3-0.10 0.6 0.7 B1 910502 1040 31.25 34-19.82 81-18.53 0.92 0.12 8 160 2.' 9.09 0.6 4.6 C1 910502 1222 55.71 34-20.01 81-18.86 2.60 1.02 12 110 1.7 0.09 0.5 0.6 B1 910502 1321 58.12 34-19.96 81-18.70 0.73 -0.60 7 157 2.4 0.12 1.5 3.2 C1 910502 1750 58.13 34-19.98 81-18.59 0.02 0.82 4 161 2.6 0.03 C1 910502 2339 52.38 34-20.31 81-18.26 2.84 1.54 11 161 1.1 0.19 1.3 1.7 C1 910502 2351 19.12 34-20.28 81-19.09 3.80 0.21 12 118 1.8 0.13 0.8 0.8 B1 910502 2351 35.81 34-20.28 81-17.84 1.00 -0.40 8 187 0.7 0.13 1.0 1.3 C1 910503 03 5.87 34-20.01 81-18.84 3.27 0.82 11 110 1.7 0.10 0.6 0.7 B1 910503 110 38.96 34-19.92 81-18.60 2.22 0.82 12 108 1.3 0.08 0.4 0.6 B1

~910519 58 2.82 34-19.56 81-18.15 0.87 0.12 6 165 3.4 0.07 0.6 9.0 C1 910519 511 8.19 34-19.08 81-19.05 1,93 0.21 7 168 2.7 0.07 0.9 1.4 B1 910523 1546 16.35 34-22.33 81-15.07 1.85 0.68 5 266 6.8 0.11 4.7 D1 910526 23 3 46.60 34-20.50 81-19.81 0.28 -0.24 6 139 0.9 0.05 1.0 2.5 C1 910527 419 28.32 34-20.28 81-20.35 1.00 0.82 12 203 0.2 0.16 1.0 0.8 C1 910612 2332 26.38 34-19.35- 81-19.32 1.52 -0.11 5 188 2.1 0.12 4.2 4.4 D1 910618 17 6 12.33 34-20.61 81-16.33 1.83 0.01 6 229 2.5 0.13 3.0 3.7 D1 910620 1919 23.83 34-20.99 81-20.90 3.35 0.37 9 231 1.8 0.11 1.0 0.8 C1 910727 2 3 10.49 34-20.83 81-20.35 3.18 0.82 8 214 1.2 0.09 0.9 0.8 C1 910727- 751 47.88 34-20.64 81-20.35 1.75 1.02 8 214 0.9 0.16 1.6 1.4 C1 910727 752 43.49 34-20.62 81-20.35 1.00 0.73 5 214 0.8 0.12 2.3 3.2 C1 910801 20 0 9.89 34-24.36 81-22.44 2.10- 1.54 5 337 8.4 0.04 2.2 4.6 C1 910909 1921 28.56 34-22.26 81-19.42 0.85 1.54 7 311 4.0 0.13 1.7 D1 911022 1748 8.31 34-22.91 81-21.64 1.75 1.54 8 314 3.5 0.07 1.1 1.4 C1 911116 25 2 28.12 34-20.78 81-19.78 1.00 -0.40 7 156 1.3 0.08 1.1 2.2 C1 i

911116 1645 14.22 34-20.28 81-20.35 1.99 0.82 8 203 0.2 0.18 1.6 1.2 C1 911116 2317 36.30 34-20.81 81-19.63 0.61 0.21 8 145 1.5 0.12 1.1 2.5 C1 911117 014 26.20 34-20.77 81-20.35 0.17 0.21 5 209 1.1 0.08 2.5 1.4 D1 911119 1738 46.49 34-25.00 81-22.88 2.80 1.44 8 329 7.3 0.14 3.8 4.2 D1 24