EPICENTRAL LOCATIONS AND ARRIVAL TIMES APRIL 1990 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900201 1 3 57.15 32-23.40 115-14.40 3.80 17 0.24 2.9 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD CPBX IPC 1 3 58.21 S 1 59.74 2.8 EMX EP 2 1 4 3.77 S 2 9.77 LMX EP+ 1 4 4.04 RDX IPC 1 4 10.58 S 1 20.71 ECBX EP 1 1 4 13.72 S 1 26.36 3.0 CBX EP+ 1 4 18.11 S 1 34.51 2.8 3.1 ENX EP 2 1 4 20.03 S 1 37.50 SPX EPN2 1 4 20.80 S 1 39.17 PBX EP 1 1 4 21.61 S 1 40.80 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900201 556 10.48 31-56.40 116-36.00 4.40 6 0.08 1.4 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX EP- 5 56 12.20 S 1 13.50 PBX IP- 5 56 14.70 S 2 18.65 CBX EP- 5 56 17.50 S 1 22.90 1.4 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900201 6 0 57.63 31-56.40 116-37.80 7.60 6 0.05 1.2 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX EP 6 0 59.40 S 1 60.80 PBX IP-1 6 1 1.70 S 1 5.10 CBX EP- 6 1 4.40 S 1 9.60 1.2 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900201 1925 26.20 31-40.20 115-55.20 16.50 16 0.19 3.4 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD EMX IPC 19 25 37.96 S 1 46.73 ENX IPC 19 25 38.15 S 1 47.31 3.0 PBX IPC 19 25 38.60 S 1 48.21 3.1 SPX EP- 19 25 39.27 S 1 49.08 ECBX IPC2 19 25 40.00 S 1 50.30 3.4 CPBX EP 2 19 25 42.03 S 2 55.00 CBX EP-1 19 25 42.12 S 1 53.97 3.5 3.2 LMX EP+4 19 25 43.07 S 2 54.74 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900203 243 21.45 31-45.60 115-58.80 4.00* 10 0.07 1.9 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX EP+ 2 43 32.00 S 2 40.20 PBX EP 2 43 32.70 S 1 41.50 2.0 EMX EP 2 43 33.40 S 1 42.60 CBX EP 2 43 35.50 S 1 46.50 1.9 ECBX EP 2 43 36.30 S 1 47.60 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900204 213 38.20 34-21.00 117- 5.40 5.00* 15 3.8 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD CBX EPN 2 14 14.90 S 1 41.66 4.1 3.8 ENX EPN 2 14 21.04 S 1 53.69 PBX EPN 2 14 22.71 S 1 59.07 CPBX EPN 2 14 23.86 S 1 54.46 RDX EPN 2 14 25.52 S 1 58.69 EMX EP 1 2 14 30.65 S 1 66.88 ECBX IPC 2 14 40.38 S 1 81.99 SPX EPN 2 14 41.02 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900204 351 57.23 31-42.00 115-56.40 4.90 14 0.29 1.9 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD RDX EP 1 3 52 1.51 S 1 5.03 EMX EP+2 3 52 9.00 S 1 17.60 PBX EP 2 3 52 9.00 S 1 18.35 SPX EP 1 3 52 10.60 S 1 20.85 1.9 ECBX EP+1 3 52 11.00 S 1 21.68 CBX IPD 3 52 12.40 S 1 24.00 LMX EP 2 3 52 12.84 CPBX EP 4 3 52 14.12 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900204 854 37.46 32-52.80 118-00.00 8.00* 18 0.26 4.7 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD CBX EPN 8 54 59.68 S 1 76.35 4.4 ENX EPN- 8 55 3.24 S 4 23.92 4.2 PBX EPN 8 55 3.99 S 1 25.01 4.3 RDX EPN 8 55 10.93 S 1 36.98 4.5 CPBX EPN 8 55 15.54 S 4 47.90 EMX EPN4 8 55 17.07 S 4 52.00 LMX EPN 8 55 20.14 S 4 55.40 SPX EPN4 8 55 23.01 S 4 59.70 ECBX EPN 8 55 23.35 S 4 62.50 4.9 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900207 1 7 4.40 33-51.60 116- 9.60 6.00* 16 4.0 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD CBX EPN 1 7 32.92 S 1 55.87 4.1 CPBX EPN2 1 7 34.80 S 2 59.40 RDX EPN2 1 7 37.84 S 1 66.15 ENX EPN 1 7 39.38 S 2 67.13 4.3 3.9 EMX EPN 1 7 40.50 S 2 69.18 PBX EPN 1 7 41.53 S 1 70.21 4.2 ECBX EPN2 1 7 47.50 S 2 82.32 SPX EPN2 1 7 52.70 S 2 90.18 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900208 1932 50.72 31-59.40 117-21.60 14.30 8 0.09 2.4 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD PBX IP- 19 33 1.00 S 1 9.40 2.5 2.7 ENX EP 1 19 33 1.30 S 1 9.70 CBX EPN 19 33 2.68 S 1 11.90 2.4 2.8 RDX EP 1 19 33 11.38 S 1 27.72 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900211 1052 33.50 31-48.00 115-55.80 17.40 16 0.13 3.2 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD EMX IP- 10 52 44.38 S 1 52.50 3.3 ENX IP- 10 52 44.73 S 1 53.49 PBX IP- 10 52 45.76 S 1 55.03 3.1 CBX IPD 10 52 47.65 S 1 58.61 3.4 3.1 ECBX IP+ 10 52 47.91 S 1 58.80 3.0 CPBX EP-2 10 52 48.01 S 2 59.30 SPX EP- 10 52 48.57 S 1 60.05 LMX IP+2 10 52 48.93 S 2 60.40 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900214 1114 11.10 33-51.60 116- 9.60 5.00* 15 3.5 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD CBX EPN 11 14 39.72 S 1 58.67 3.8 3.4 CPBX EPN 11 14 41.87 S 1 58.56 RDX EPN 11 14 44.53 S 1 68.30 ENX EPN 11 14 46.48 S 1 73.01 3.7 EMX EPN 11 14 47.00 PBX EPN 11 14 48.53 S 1 77.21 3.3 ECBX EPN 11 15 1.43 S 2 32.78 SPX EPN 11 15 5.12 S 4 38.82 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900215 2 0 14.31 31-56.40 115-43.80 3.40 12 0.44 2.1 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD EMX EP 1 2 0 21.00 S 2 27.50 CPBX EP 2 2 0 24.50 S 2 34.00 LMX EP+ 2 0 26.56 S 2 36.00 PBX IP+ 2 0 29.52 S 1 41.58 2.1 2.1 CBX EP- 2 0 29.88 S 1 41.94 2.2 2.1 SPX EP 2 2 0 30.87 S 2 43.15 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900215 416 47.07 31-21.00 115-24.00 9.50 16 0.18 2.6 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD SPX IPD 4 16 52.78 S 1 57.44 2.4 ECBX IPC 4 16 52.96 S 1 57.53 2.8 EMX IPC 4 16 58.69 S 1 67.39 RDX EP- 4 17 0.31 S 1 9.81 2.5 CPBX EP+1 4 17 6.04 S 4 18.77 PBX EP+ 4 17 7.93 S 1 23.25 2.6 2.7 ENX IPD 4 17 8.10 S 1 23.88 CBX EP+2 4 17 12.20 S 2 31.00 2.7 2.8 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900217 914 12.82 31-43.20 115-56.40 1.30 15 0.36 2.5 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD RDX IPC 9 14 16.15 S 2 19.20 EMX EP 2 9 14 24.37 S 1 34.15 ENX EP- 9 14 24.63 S 1 33.28 PBX IP+ 9 14 25.19 S 1 34.62 2.5 2.5 ECBX EP+ 9 14 27.09 S 1 37.69 CBX EP- 9 14 28.11 S 1 39.70 2.5 2.4 CPBX EP- 9 14 28.67 S 2 41.35 2.4 LMX EP+ 9 14 29.29 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900217 2232 26.00 34- 7.20 117-43.20 10.00* 14 4.4 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD CBX EPN 22 33 1.10 S 1 28.00 4.5 ENX EPN 22 33 6.80 S 2 37.50 4.3 PBX EPN 22 33 8.00 S 2 41.00 4.4 CPBX EPN2 22 33 11.50 RDX EPN2 22 33 12.03 S 2 47.00 5.0 EMX EPN 22 33 16.50 S 2 55.00 4.8 LMX EPN2 22 33 17.50 ECBX EPN2 22 33 22.50 S 2 66.50 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900218 1432 48.50 33-52.80 116- 9.00 5.00* 12 3.9 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD CBX EPN 14 33 17.00 S 1 37.00 3.9 CPBX EPN2 14 33 20.36 RDX EPN1 14 33 21.67 S 1 46.86 ENX EPN1 14 33 23.47 S 1 50.62 EMX EPN1 14 33 23.50 PBX EPN1 14 33 26.07 S 1 55.20 3.9 LMX EPN2 14 33 29.68 ECBX EPN2 14 33 38.30 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900219 1454 20.58 31-48.60 116- 7.80 3.00* 12 0.21 1.8 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX EP 1 14 54 29.08 S 1 35.84 PBX IPC 14 54 29.79 S 1 37.42 1.8 CBX EP 1 14 54 32.87 S 2 41.70 EMX EP 2 14 54 34.20 S 4 44.00 SPX EP 2 14 54 37.01 S 4 48.23 ECBX EP 2 14 54 37.73 S 2 51.30 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900220 324 45.50 34- 6.60 117-43.20 10.00* 10 3.5 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD CBX EPN 3 25 20.30 S 1 44.10 3.6 ENX EPN 3 25 25.70 S 1 59.50 3.4 PBX EPN 3 25 27.00 S 2 61.00 3.5 EMX EP 3 25 38.60 S 2 78.00 LMX EP 1 3 25 43.00 ECBX EP 2 3 25 47.50 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900221 1251 50.42 31-42.60 115-57.60 5.00 14 0.13 2.1 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD RDX IPD 12 51 54.43 S 1 57.70 ENX IPC 12 52 1.35 S 1 10.05 PBX IPC 12 52 1.92 S 1 10.95 2.1 EMX EP 1 12 52 2.40 S 1 11.14 SPX EP 1 12 52 4.29 S 1 14.79 ECBX IPD 12 52 4.80 S 1 15.69 CBX EP 1 12 52 5.32 S 1 16.44 2.2 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900223 312 36.20 32-37.80 116-13.20 13.00* 6 0.07 2.3 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD CBX IPC 3 12 45.00 S 1 51.82 2.3 RDX IP 3 12 49.10 S 1 59.30 PBX EP 1 3 12 53.33 S 1 66.50 2.3 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900224 1127 19.00 33-52.80 116- 9.60 5.00* 10 3.6 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD CBX EPN 11 27 47.51 S 1 67.00 3.8 3.4 CPBX EP 2 11 27 53.20 S 2 78.50 ENX EPN 11 27 54.07 S 1 78.60 3.8 RDX EPN 11 27 55.37 S 4 80.65 PBX EPN 11 27 56.12 S 2 81.00 3.4 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900226 412 52.07 32- 1.80 116-58.80 2.00* 8 0.20 1.7 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX EP 1 4 12 57.91 S 1 62.67 PBX IPD 4 12 58.73 S 1 63.96 1.5 1.8 CBX EP- 4 12 59.60 S 1 64.88 1.7 RDX EP 1 4 13 8.05 S 1 20.04 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900226 1312 32.25 32-17.40 116-18.60 4.90 8 0.17 2.6 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD CBX IPC 13 12 37.70 S 1 41.50 2.7 ENX EP+ 13 12 41.40 S 1 48.00 PBX EP- 13 12 43.70 S 1 52.80 2.5 EMX EP- 13 12 48.80 S 1 61.70 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900227 355 30.64 31-41.40 115-55.80 4.00* 10 0.09 2.5 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX EP- 3 55 42.30 S 1 51.44 EMX EP+ 3 55 42.30 S 1 51.45 PBX EP- 3 55 42.58 S 1 52.05 2.5 ECBX IPC 3 55 44.30 S 1 55.10 CBX EP- 3 55 46.26 S 1 57.91 2.5 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900227 2031 55.06 32-13.80 115-33.00 15.40 7 0.39 2.1 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD EMX EP 1 20 32 1.50 S 1 6.90 LMX IPC 20 32 5.05 CBX EP- 20 32 11.20 S 1 23.92 2.2 PBX EP+1 20 32 14.45 S 1 29.40 2.1 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900226 412 52.07 32- 1.80 116-58.80 2.00* 8 0.20 1.7 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD PBX IPC 13 41 30.30 S 1 34.50 2.0 CBX EP- 13 41 36.30 S 1 45.00 2.0