1Run 30213-2302 Analysis center: GSF -- NASA Goddard Space Flight Center Analyst: Leonid Petrov ( pet@dorado.gsfc.nasa.gov ) Machine: dorado 9000/735 HP-UX B.10.20 Executables: /data25/mk4/bin Solve initials: PX Control file: Interactive solution Local time: 2000.07.31-19:02:43 Correlator type: ?? Data base $98OCT01X6 Ver 5 Matrix Condition Number = 6.308373593157776E+05 Flyby Station Cals: DB Station Cals: | DB Non-station Cals: | Atmosphere Partial: -------------------------------------------------------------------------------------------------- GILCREEK:NMFDRFLY cable | Pol Tide | NMFWTFLY KOKEE :NMFDRFLY cable | WobXCont | LA-VLBA :NMFDRFLY cable | WobYCont | MK-VLBA :NMFDRFLY cable | EarthTid | NRAO20 :NMFDRFLY cable | Ocean | SC-VLBA :NMFDRFLY cable | PTideOld | | Feed Rot | -------------------------------------------------------------------------------------------------- CALC Version: 9.11 SOLVE release: 2000.07.25 SOLVE revision: 2000.07.26 Fast_mode: B3D Fast_cov: SEG $98OCT01S6 5 NOT IN SOLUTION Met Statistics: Temperature Pressure Humidity Station average rms average rms average rms GILCREEK MET -.1 4.1 980.1 .4 43.0 16.3 KOKEE MET 14.0 1.8 891.7 .7 98.9 .6 LA-VLBA MET 12.6 2.8 803.1 1.6 77.6 7.3 MK-VLBA MET 6.9 1.9 656.2 .5 31.6 15.6 NRAO20 MET 5.6 7.2 922.2 2.9 74.0 23.1 SC-VLBA MET 29.9 1.4 1015.8 .9 73.2 4.9 Run 30213-2302 2090 Observation Pairs Available Session started on: 2451088.066000 1998.10.01 13:35:02.400 UTC Actual duration: 87781.000 sec 01 00:23:01.000 sec Solution type: G-Gxs combination Data Type Number of Weighted RMS Normalized RMS Chi Square Observations Residual Residual (incorr) Used Delay 1665 34 ps .92 1.0800 No rate ----------------------------------------------------------------------- CRES mode: POST98_1 mode Suppression method in use: SUPMET__COMB1 Used quality_code_limit: 5 Number of potentially recoverable observations: 1859 Number of potentially good observations with QC 5-9: 1855 Number of used observations: 1665 ( 89.56%) Number of suppressed observations: 190 ( 10.24%) ----------------------------------------------------------------------- Baseline Statistics Baseline # W.Obs W.RMS Del N.R.D. N.R.D. W.RMS Rate N.R.R. D.RW R.RW used/recov ps standard ( 15ps+i) fs/s ps fs/s GILCREEK-KOKEE 41/ 90 63 .95 1.26 0 .00 52 388 GILCREEK-LA-VLBA 148/ 151 32 .92 1.12 0 .00 28 383 GILCREEK-MK-VLBA 114/ 114 23 .88 .87 0 .00 20 101 GILCREEK-NRAO20 107/ 110 29 .91 .94 0 .00 24 128 GILCREEK-SC-VLBA 99/ 106 44 .94 1.18 0 .00 36 458 KOKEE -LA-VLBA 119/ 125 52 .93 1.27 0 .00 44 757 KOKEE -MK-VLBA 151/ 153 46 .92 1.44 0 .00 43 676 KOKEE -NRAO20 56/ 80 53 .93 1.01 0 .00 38 520 KOKEE -SC-VLBA 69/ 86 62 .97 1.24 0 .00 45 885 LA-VLBA -MK-VLBA 147/ 151 25 .89 .97 0 .00 22 401 LA-VLBA -NRAO20 155/ 177 24 .91 .94 0 .00 21 246 LA-VLBA -SC-VLBA 166/ 178 47 .95 1.76 0 .00 44 505 MK-VLBA -NRAO20 77/ 103 28 .91 .93 0 .00 21 135 MK-VLBA -SC-VLBA 86/ 90 54 .95 1.40 0 .00 47 459 NRAO20 -SC-VLBA 130/ 145 46 .94 1.62 0 .00 43 399 Source Statistics Source # W.Obs W.RMS Del N.R.D. N.R.D. W.RMS Rate N.R.R. ps standard ( 15ps) fs/s 0003-066 A 14/ 21 43 1.09 1.55 0 .00 0014+813 B 77/ 100 39 1.00 1.03 0 .00 0048-097 C 11/ 17 28 .71 .92 0 .00 0059+581 D 56/ 66 23 .74 1.16 0 .00 0104-408 E 5/ 7 33 .93 2.16 0 .00 0106+013 F 22/ 24 37 1.07 1.52 0 .00 0119+115 G 19/ 20 34 .82 1.05 0 .00 0119+041 H 7/ 8 22 .58 .71 0 .00 0133+476 I 43/ 46 25 .71 1.12 0 .00 0201+113 J 23/ 27 69 1.14 .98 0 .00 0202+149 K 33/ 36 37 .95 1.13 0 .00 0208-512 L 1/ 1 33 .67 1.05 0 .00 0229+131 M 16/ 16 29 .80 .86 0 .00 0234+285 N 15/ 19 62 1.42 2.34 0 .00 NGC1052 O 17/ 27 66 1.21 1.44 0 .00 CTA26 P 20/ 26 24 .68 1.19 0 .00 0402-362 Q 11/ 12 52 1.32 1.85 0 .00 3C120 R 33/ 39 36 1.04 1.47 0 .00 0440+345 S 30/ 33 34 .84 1.03 0 .00 0454-234 T 21/ 25 39 1.07 1.99 0 .00 0458-020 U 32/ 39 38 .84 .92 0 .00 0521-365 V 11/ 12 35 .89 1.32 0 .00 0528+134 W 38/ 47 22 .68 1.24 0 .00 0537-441 X 6/ 8 44 1.17 1.80 0 .00 0552+398 Y 33/ 36 16 .54 .91 0 .00 0642+449 Z 33/ 40 31 .92 2.02 0 .00 0727-115 A 22/ 23 28 .81 1.40 0 .00 0804+499 B 1/ 2 26 .69 .76 0 .00 0814+425 C 34/ 39 29 .78 1.00 0 .00 0823+033 D 25/ 30 48 1.01 1.08 0 .00 OJ287 E 28/ 33 32 .88 1.02 0 .00 0919-260 F 4/ 4 30 .76 1.22 0 .00 0920-397 G 7/ 7 30 .63 .90 0 .00 4C39.25 H 25/ 35 14 .53 1.00 0 .00 0955+476 I 21/ 30 26 .65 .91 0 .00 0954+658 J 13/ 23 78 1.16 .98 0 .00 1034-293 K 9/ 10 35 .79 .94 0 .00 1038+52A L 8/ 10 61 1.01 1.04 0 .00 1044+719 M 72/ 88 36 .99 1.17 0 .00 1055+018 N 23/ 33 40 .95 1.09 0 .00 1101+384 O 6/ 7 31 .77 .96 0 .00 1124-186 P 2/ 2 31 .67 1.41 0 .00 1128+385 Q 51/ 59 51 1.09 1.09 0 .00 1144-379 R 9/ 10 30 .69 .76 0 .00 1145-071 S 9/ 19 60 .97 .89 0 .00 1156+295 T 4/ 7 28 .89 1.49 0 .00 1222+037 U 9/ 17 72 1.06 .95 0 .00 3C274 V 6/ 12 45 1.13 1.10 0 .00 1237-101 W 10/ 17 54 1.07 1.05 0 .00 1300+580 X 9/ 15 51 1.31 1.32 0 .00 1308+326 Y 24/ 32 44 1.14 1.31 0 .00 1313-333 Z 13/ 15 75 1.09 .93 0 .00 1334-127 A 13/ 15 18 .49 .72 0 .00 1354+195 B 20/ 24 48 .97 .99 0 .00 1357+769 C 33/ 36 39 1.01 1.17 0 .00 OQ208 D 8/ 10 64 1.48 2.10 0 .00 1424-418 E 5/ 5 69 1.64 2.60 0 .00 1451-375 F 4/ 9 63 .97 1.04 0 .00 1508+572 G 8/ 12 39 .97 1.18 0 .00 1514-241 H 13/ 19 37 .96 1.29 0 .00 1606+106 I 42/ 47 48 1.02 1.00 0 .00 1611+343 J 37/ 41 26 .81 1.30 0 .00 1622-253 K 7/ 11 36 1.03 1.38 0 .00 1633+38 L 7/ 8 71 1.54 1.44 0 .00 NRAO512 M 31/ 42 25 .71 .82 0 .00 1739+522 N 44/ 56 26 .83 1.24 0 .00 1741-038 O 23/ 26 28 .90 2.17 0 .00 1745+624 P 8/ 9 41 1.16 1.36 0 .00 1749+096 Q 28/ 37 24 .80 1.80 0 .00 1803+784 R 30/ 43 34 .93 1.10 0 .00 3C371 S 45/ 60 37 .92 1.04 0 .00 1815-553 T 1/ 1 179 2.21 2.00 0 .00 1908-201 U 20/ 24 28 .84 1.43 0 .00 1921-293 V 13/ 17 31 .89 1.96 0 .00 1937-101 W 9/ 14 24 .59 .61 0 .00 1954-388 X 4/ 10 8.8 .23 .34 0 .00 2007+777 Y 24/ 45 29 .80 .97 0 .00 2052-474 Z 1/ 2 18 .36 .52 0 .00 2145+067 A 29/ 35 24 .74 1.35 0 .00 VR422201 B 53/ 61 30 .88 1.18 0 .00 2234+282 C 4/ 6 74 1.78 1.79 0 .00 2243-123 D 21/ 25 43 .86 1.05 0 .00 2253+417 E 9/ 9 32 .80 .87 0 .00 *** Flyby Status *** directory: /data1/save_files/ Station Source Nutation Nutation Earth Earth Station Pressure EOP Intp. EOP Intp. High Freq Axis Positions Positions Model Time Rotation Rotation Velocity Loading Smoothing Smoothing EOP Offset Series Series Interpol. Model CALC Mod File Model Mod File --------- --------- --------- --------- --------- --------- --------- --------- --------- --------- --------- --------- l_pet.sit l_pet.src NONE NONE NONE C. Spline NONE NONE UT1S N/A jmg96.hf l_pet.axi Site Plate Map: /data1/save_files//sitpl.dat Parameter adjustments for run 30213-2302 User=PX Parameter Adjustment Sigma Scaled Sigma 1. GILCREEK CL 0 98/10/01 13:35 -6203.184 ns .061 ns .056 ns 2. GILCREEK CL 1 98/10/01 13:35 -16.569 D-14 .851 D-14 .786 D-14 3. GILCREEK CL 2 98/10/01 13:35 -.303 D-14/day .730 D-14/day .675 D-14/day 29. GILCREEK AT 0 98/10/01 13:35 47.049 ps 38.027 ps 35.148 ps GILCREEK Avg Atm: 67.686 55. GILCREEK NG 98/10/01 13:34 -.366 mm .559 mm .517 mm 56. GILCREEK EG 98/10/01 13:34 -.138 mm .390 mm .361 mm 57. GILCREEK NG 98/10/02 13:57 .530 mm .417 mm .385 mm 58. GILCREEK EG 98/10/02 13:57 -.144 mm .500 mm .462 mm Station positions are for epoch: 98/10/01 59. KOKEE 7298 PCFC X Comp -5543837630.19 mm 8.464 mm 8.678 mm 8.021 mm 60. KOKEE 7298 PCFC Y Comp -2054567740.40 mm 4.828 mm 5.791 mm 5.352 mm 61. KOKEE 7298 PCFC Z Comp 2387851976.85 mm -15.946 mm 7.516 mm 6.947 mm KOKEE 7298 U Comp -14.91 mm -14.913 mm 11.271 mm 10.417 mm KOKEE 7298 E Comp -1.59 mm -1.585 mm 3.610 mm 3.336 mm KOKEE 7298 N Comp -11.15 mm -11.151 mm 5.028 mm 4.647 mm 62. KOKEE CL 0 98/10/01 13:35 1619.439 ns .075 ns .069 ns 63. KOKEE CL 1 98/10/01 13:35 4.720 D-14 .867 D-14 .801 D-14 64. KOKEE CL 2 98/10/01 13:35 .016 D-14/day .741 D-14/day .685 D-14/day 90. KOKEE AT 0 98/10/01 13:35 255.959 ps 24.737 ps 22.864 ps KOKEE Avg Atm: 206.972 116. KOKEE NG 98/10/01 13:34 -.316 mm .295 mm .272 mm 117. KOKEE EG 98/10/01 13:34 .283 mm .501 mm .463 mm 118. KOKEE NG 98/10/02 13:57 -.146 mm .320 mm .296 mm 119. KOKEE EG 98/10/02 13:57 -.130 mm .460 mm .425 mm 120. LA-VLBA 7611 NOAM X Comp -1449752373.21 mm 1.437 mm 2.687 mm 2.484 mm 121. LA-VLBA 7611 NOAM Y Comp -4975298585.33 mm -3.054 mm 3.891 mm 3.596 mm 122. LA-VLBA 7611 NOAM Z Comp 3709123909.39 mm -6.595 mm 6.073 mm 5.613 mm LA-VLBA 7611 U Comp -1.80 mm -1.803 mm 6.518 mm 6.025 mm LA-VLBA 7611 E Comp 2.23 mm 2.234 mm 2.138 mm 1.976 mm LA-VLBA 7611 N Comp -6.83 mm -6.830 mm 3.490 mm 3.226 mm 123. LA-VLBA AT 0 98/10/01 13:35 331.720 ps 20.886 ps 19.304 ps LA-VLBA Avg Atm: 259.993 149. LA-VLBA NG 98/10/01 13:34 .190 mm .228 mm .210 mm 150. LA-VLBA EG 98/10/01 13:34 -.340 mm .255 mm .236 mm 151. LA-VLBA NG 98/10/02 13:57 -.216 mm .148 mm .137 mm 152. LA-VLBA EG 98/10/02 13:57 .551 mm .143 mm .132 mm 153. MK-VLBA 7617 PCFC X Comp -5464074979.31 mm -5.103 mm 5.454 mm 5.041 mm 154. MK-VLBA 7617 PCFC Y Comp -2495249006.85 mm -9.592 mm 4.132 mm 3.819 mm 155. MK-VLBA 7617 PCFC Z Comp 2148296884.52 mm -8.480 mm 6.483 mm 5.992 mm MK-VLBA 7617 U Comp 5.24 mm 5.244 mm 7.787 mm 7.198 mm MK-VLBA 7617 E Comp 6.61 mm 6.606 mm 2.379 mm 2.199 mm MK-VLBA 7617 N Comp -10.90 mm -10.901 mm 4.748 mm 4.388 mm 156. MK-VLBA CL 0 98/10/01 13:35 1747.604 ns .056 ns .052 ns 157. MK-VLBA CL 1 98/10/01 13:35 2.878 D-14 .843 D-14 .779 D-14 158. MK-VLBA CL 2 98/10/01 13:35 -.784 D-14/day .719 D-14/day .665 D-14/day 184. MK-VLBA AT 0 98/10/01 13:35 5.833 ps 21.202 ps 19.596 ps MK-VLBA Avg Atm: 33.287 210. MK-VLBA NG 98/10/01 13:34 .199 mm .205 mm .190 mm 211. MK-VLBA EG 98/10/01 13:34 -.009 mm .299 mm .276 mm 212. MK-VLBA NG 98/10/02 13:57 -.041 mm .235 mm .217 mm 213. MK-VLBA EG 98/10/02 13:57 .420 mm .280 mm .259 mm 214. NRAO20 7208 NOAM X Comp 883772742.47 mm 11.398 mm 2.654 mm 2.453 mm 215. NRAO20 7208 NOAM Y Comp -4924385632.87 mm -47.718 mm 4.967 mm 4.591 mm 216. NRAO20 7208 NOAM Z Comp 3944042522.30 mm 28.849 mm 6.640 mm 6.137 mm NRAO20 7208 U Comp 56.30 mm 56.301 mm 7.275 mm 6.724 mm NRAO20 7208 E Comp 2.79 mm 2.789 mm 2.969 mm 2.744 mm NRAO20 7208 N Comp -7.85 mm -7.851 mm 3.752 mm 3.468 mm 217. NRAO20 CL 0 98/10/01 13:35 12597.067 ns .234 ns .216 ns 218. NRAO20 CL 1 98/10/01 13:35 11.179 D-14 1.231 D-14 1.138 D-14 219. NRAO20 CL 2 98/10/01 13:35 -.742 D-14/day .958 D-14/day .885 D-14/day 245. NRAO20 AT 0 98/10/01 13:35 97.923 ps 88.250 ps 81.568 ps NRAO20 Avg Atm: 116.914 271. NRAO20 NG 98/10/01 13:34 -.836 mm .272 mm .251 mm 272. NRAO20 EG 98/10/01 13:34 -1.440 mm .410 mm .379 mm 273. NRAO20 NG 98/10/02 13:57 -.048 mm .175 mm .161 mm 274. NRAO20 EG 98/10/02 13:57 .049 mm .319 mm .295 mm 275. SC-VLBA 7615 CARB X Comp 2607848557.90 mm 13.161 mm 4.153 mm 3.839 mm 276. SC-VLBA 7615 CARB Y Comp -5488069689.12 mm -5.068 mm 9.322 mm 8.616 mm 277. SC-VLBA 7615 CARB Z Comp 1932739553.18 mm -8.998 mm 7.565 mm 6.993 mm SC-VLBA 7615 U Comp 7.00 mm 6.995 mm 10.598 mm 9.795 mm SC-VLBA 7615 E Comp 9.71 mm 9.712 mm 3.972 mm 3.671 mm SC-VLBA 7615 N Comp -11.69 mm -11.688 mm 5.770 mm 5.333 mm 278. SC-VLBA CL 0 98/10/01 13:35 1993.957 ns .067 ns .062 ns 279. SC-VLBA CL 1 98/10/01 13:35 1.953 D-14 .845 D-14 .781 D-14 280. SC-VLBA CL 2 98/10/01 13:35 -1.389 D-14/day .719 D-14/day .665 D-14/day 306. SC-VLBA AT 0 98/10/01 13:35 861.044 ps 17.365 ps 16.050 ps SC-VLBA Avg Atm: 835.476 332. SC-VLBA NG 98/10/01 13:34 1.025 mm .453 mm .419 mm 333. SC-VLBA EG 98/10/01 13:34 -1.822 mm .511 mm .472 mm 334. SC-VLBA NG 98/10/02 13:57 .499 mm .588 mm .544 mm 335. SC-VLBA EG 98/10/02 13:57 1.026 mm .811 mm .750 mm Atmosphere Constraint Statistics 1.GILCREEK Input 40.00 ps/h RMS 12.86 ps/h NRMS .32 share .23 count 26 2.KOKEE Input 40.00 ps/h RMS 35.34 ps/h NRMS .88 share .23 count 26 3.LA-VLBA Input 40.00 ps/h RMS 34.71 ps/h NRMS .87 share .11 count 26 4.MK-VLBA Input 40.00 ps/h RMS 18.73 ps/h NRMS .47 share .16 count 26 5.NRAO20 Input 40.00 ps/h RMS 16.18 ps/h NRMS .40 share .31 count 26 6.SC-VLBA Input 40.00 ps/h RMS 55.22 ps/h NRMS 1.38 share .23 count 26 Overall RMS 32.35 ps/h NRMS .81 share .21 count 156 Clock Constraint Statistics 1.GILCREEK Input 2.00 D-14 RMS .96 D-14 NRMS .48 share .32 count 26 2.KOKEE Input 2.00 D-14 RMS 1.09 D-14 NRMS .54 share .42 count 26 4.MK-VLBA Input 2.00 D-14 RMS .77 D-14 NRMS .38 share .32 count 26 5.NRAO20 Input 2.00 D-14 RMS .77 D-14 NRMS .38 share .41 count 26 6.SC-VLBA Input 2.00 D-14 RMS 1.34 D-14 NRMS .67 share .38 count 26 Overall RMS 1.01 D-14 NRMS .50 share .37 count 130 336. UT1-TAI 1, 98/10/02 01:46 -1.2951 ms/d 8.26 micros/d 15.82 micros/d 14.62 micros/d EOP corrected for high-frequency variations XWOB YWOB UT1-TAI XSIG YSIG USIG mas mas ms microasec microasec microsec 98/10/02 01:46 .0000 .0000 .0000 .00 .00 .00 EOP epoch (UTC) MJD: 51088.07361 337. Nutation offset in longitude (Psi) -.404 mas 107.3 microasec 99.1 microasec Nutation offset wrt IAU 1980 model (Psi) -52.502 mas 107.3 microasec 99.1 microasec 338. Nutation offset in obliquity (Eps) .128 mas 60.4 microasec 55.8 microasec Nutation offset wrt IAU 1980 model (Eps) -7.264 mas 60.4 microasec 55.8 microasec 339. GILCREEK-KOKEE Clock offset 501.474 ps 12.578 ps 11.626 ps 340. GILCREEK-MK-VLBA Clock offset -.937 ps 4.757 ps 4.397 ps 341. GILCREEK-NRAO20 Clock offset 3.414 ps 5.164 ps 4.773 ps 342. GILCREEK-SC-VLBA Clock offset -5.869 ps 7.230 ps 6.682 ps 343. KOKEE -MK-VLBA Clock offset .532 ps 7.281 ps 6.729 ps 344. KOKEE -NRAO20 Clock offset 14.801 ps 9.989 ps 9.232 ps 345. KOKEE -SC-VLBA Clock offset 5.627 ps 10.698 ps 9.888 ps 346. MK-VLBA -NRAO20 Clock offset 7.067 ps 5.188 ps 4.796 ps 347. MK-VLBA -SC-VLBA Clock offset 1.534 ps 8.046 ps 7.437 ps 348. NRAO20 -SC-VLBA Clock offset 6.860 ps 6.536 ps 6.041 ps General constraints usage information: 1) ATM_RATE "Atmosphere rate between segments" sigma 4.0000E+01 psec/hour 2) CLO_RATE "Clock rate between segments " sigma 2.0000E+00 10**-14sec/sec 3) BLC "Baseline clock " sigma 1.0000E-06 sec Corrected Reduced Chi-Square 1.0176 Re-scale the scaled errors by 1.09 1 Baseline information for run 30213-2302 Monument to monument values (At epoch: 98/10/ 1) Trask components -------------------------------------------------------- Vector mag Scaled Length Scaled Horizontal Scaled Vertical Scaled (mm) Sigma (mm) Sigma (mm) Sigma (mm) Sigma GILCREEK 7225 to KOKEE 7298 4728081872.87 4.39 4728081872.87 4.39 .12 3.11 18.03 10.60 GILCREEK 7225 to LA-VLBA 7611 4157847359.51 2.36 4157847359.51 2.36 1.11 1.66 4.02 6.50 GILCREEK 7225 to MK-VLBA 7617 4923018344.27 3.13 4923018344.27 3.13 -7.48 2.04 -.84 7.87 GILCREEK 7225 to NRAO20 7208 5035085017.20 2.83 5035085017.20 2.83 1.81 1.88 -48.53 7.30 GILCREEK 7225 to SC-VLBA 7615 7403221571.46 5.28 7403221571.46 5.28 -3.48 2.50 2.91 10.19 KOKEE 7298 to LA-VLBA 7611 5199804061.66 3.87 5199804061.66 3.87 -2.16 2.18 -13.88 9.67 KOKEE 7298 to MK-VLBA 7617 507886504.39 2.24 507886504.39 2.24 -4.61 2.44 -19.48 8.39 KOKEE 7298 to NRAO20 7208 7209144113.73 5.36 7209144113.73 5.36 -1.46 2.34 -60.60 9.72 KOKEE 7298 to SC-VLBA 7615 8856977512.62 7.91 8856977512.62 7.91 -3.05 2.88 -9.91 11.35 LA-VLBA 7611 to MK-VLBA 7617 4970071719.71 2.45 4970071719.71 2.45 -5.69 1.36 -7.07 6.43 LA-VLBA 7611 to NRAO20 7208 2345872619.94 1.56 2345872619.94 1.56 .44 1.25 -56.52 5.56 LA-VLBA 7611 to SC-VLBA 7615 4458991018.38 2.93 4458991018.38 2.93 -1.90 2.04 -1.76 9.84 MK-VLBA 7617 to NRAO20 7208 7029977086.90 3.65 7029977086.90 3.65 -5.48 1.58 -40.92 6.95 MK-VLBA 7617 to SC-VLBA 7615 8611584650.33 6.28 8611584650.33 6.28 -4.48 2.44 9.60 9.52 NRAO20 7208 to SC-VLBA 7615 2708415914.55 2.55 2708415914.55 2.55 -5.02 2.05 53.06 9.69