EPICENTRAL LOCATIONS AND ARRIVAL TIMES FEBRUARY 1990 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900201 518 13.71 31-52.20 115-36.60 4.40 16 0.18 2.4 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD RDX EP+ 5 18 18.59 S 1 23.04 EMX EP+ 5 18 19.87 S 1 24.60 ECBX EP- 5 18 24.73 S 1 33.05 LMX EP+4 5 18 25.56 S 4 35.10 CPBX EP 4 5 18 25.69 S 4 35.55 ENX EP+ 5 18 29.47 S 1 41.31 PBX EP- 5 18 30.49 S 1 43.55 CBX EP+ 5 18 31.33 S 1 44.71 2.4 2.6 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900205 1019 29.75 32-42.00 116- 1.20 3.00* 10 0.15 2.8 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD CPBX EP 1 10 19 41.50 S 4 51.15 CBX IPC 10 19 41.60 S 1 50.84 2.8 EMX EP 1 10 19 46.70 S 1 59.68 ENX EP+2 10 19 47.10 S 1 60.40 PBX EP- 10 19 49.60 S 1 64.80 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900205 2014 12.45 31-39.60 116-32.40 3.00* 12 0.16 1.9 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD PBX IPC 20 14 15.94 S 1 18.95 2.0 ENX IPD 20 14 17.15 S 1 21.25 1.9 2.0 RDX EP+ 20 14 22.61 S 1 30.60 CBX IP- 20 14 24.20 S 1 33.29 1.9 2.3 EMX EP 1 20 14 32.99 S 1 48.17 ECBX EP 2 20 14 34.97 S 1 51.98 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900206 818 38.37 32- 7.80 115-34.80 4.20 12 0.18 2.1 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD EMX EP+ 8 18 44.08 S 2 48.95 LMX EP-4 8 18 49.35 S 4 58.70 ECBX EP 2 8 18 52.50 S 2 63.08 CBX IPC 8 18 54.73 S 1 67.45 2.1 2.5 ENX IPD 8 18 55.23 S 1 67.54 PBX EP 2 8 18 56.72 S 2 71.00 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900207 614 9.68 31-43.80 115-58.20 4.60 18 0.17 2.7 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD RDX IPC 6 14 13.23 S 1 16.30 ENX IP+ 6 14 20.53 S 1 28.98 2.9 PBX IPC 6 14 21.07 S 1 30.05 2.6 EMX EP+ 6 14 21.60 S 1 30.67 SPX EP- 6 14 23.72 S 1 34.79 ECBX IPC 6 14 24.37 S 1 35.43 2.5 CBX EP- 6 14 24.39 S 1 35.41 2.9 3.0 CPBX EP 4 6 14 26.06 S 4 39.35 LMX EP+4 6 14 26.90 S 4 40.66 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900207 1120 24.26 31-21.60 115-52.20 3.70 18 0.20 2.8 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD SPX IPC 11 20 32.76 S 1 39.29 2.8 RDX IPD 11 20 34.18 S 4 41.83 ECBX IPC 11 20 37.29 S 1 46.67 2.7 PBX IPC 11 20 38.75 S 1 50.09 2.7 ENX IPC 11 20 39.14 S 1 50.76 2.9 EMX EP+ 11 20 39.22 S 1 49.97 2.8 LMX EP+4 11 20 43.59 S 4 59.34 CBX EP+ 11 20 44.36 S 1 59.93 2.9 3.1 CPBX EP+4 11 20 45.82 S 4 62.42 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900210 731 15.18 31-51.60 115-36.60 4.20 15 0.24 2.6 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD EMX EP+ 7 31 20.96 S 1 26.25 ECBX IPC 7 31 26.20 S 1 34.55 2.5 LMX EP+3 7 31 26.51 S 4 36.50 CPBX EP-4 7 31 27.38 SPX EP 1 7 31 30.00 S 1 40.85 ENX IP+ 7 31 30.91 S 1 42.80 PBX IP+ 7 31 32.09 S 1 44.79 CBX IPC 7 31 32.71 S 1 46.13 2.7 2.9 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900211 927 8.46 31-52.80 116-10.80 2.40 18 0.20 3.1 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD RDX IPC 9 27 12.30 S 2 15.68 ENX IPC 9 27 16.09 S 1 21.73 PBX IP+ 9 27 17.32 S 1 24.39 3.2 CBX EPD 9 27 19.27 S 1 27.46 3.5 EMX EP+1 9 27 23.06 S 1 33.75 3.2 CPBX EP+4 9 27 26.03 S 4 40.27 SPX EP-1 9 27 26.75 S 4 40.27 3.0 ECBX EP+1 9 27 27.45 S 1 41.50 3.2 LMX IP+4 9 27 28.08 S 4 43.85 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900211 936 11.84 31-52.80 116-12.60 5.00 10 0.12 2.6 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX EP+ 9 36 18.87 S 1 24.03 PBX EP 1 9 36 20.19 S 1 26.36 CBX IP- 9 36 22.15 S 1 29.85 2.6 EMX EP- 9 36 26.28 S 1 37.68 ECBX EP- 9 36 30.50 S 1 44.62 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900213 15 3 1.78 32-25.80 115-11.40 4.00 15 0.32 3.3 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD CPBX IP- 15 3 3.47 S 2 5.85 LMX EP+ 15 3 8.74 EMX IP+ 15 3 9.32 S 2 15.66 RDX EP- 15 3 16.25 S 1 26.95 ECBX EP+ 15 3 19.00 S 1 31.93 CBX EP+ 15 3 23.88 S 2 40.19 3.3 ENX EP+ 15 3 25.45 S 1 43.58 PBX EP- 15 3 27.30 S 1 46.76 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900217 1415 15.66 31-46.80 116-42.00 12.60 8 0.11 2.2 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD PBX IPC 14 15 17.73 S 1 19.59 2.2 ENX IPD 14 15 18.44 S 1 20.80 2.2 CBX IPD 14 15 25.41 S 1 32.58 2.2 2.5 RDX EP- 14 15 27.48 S 1 36.40 2.2 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900218 1552 59.00 33-30.60 116-27.00 10.00 8 4.3 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD CBX IPD 15 53 21.87 S 1 38.10 4.3 RDX EP-2 15 53 28.17 S 1 51.52 4.3 ENX EP+ 15 53 28.50 S 1 51.04 4.2 PBX EP+ 15 53 31.10 S 1 54.76 4.5 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900218 17 2 17.80 31-51.60 115-36.60 2.80 20 0.24 2.8 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD RDX IPD 17 2 22.89 S 1 27.39 EMX EP 1 17 2 24.08 S 1 29.08 QKP EP- 17 2 26.75 S 1 34.40 ECBX EP 2 17 2 29.08 S 1 37.32 LMX EP+4 17 2 29.86 S 4 39.51 CPBX EP-4 17 2 30.00 S 4 40.92 SPX EP- 17 2 32.61 S 1 43.66 ENX IPC 17 2 33.80 S 1 45.56 2.8 2.6 PBX IPC 17 2 35.00 S 1 47.82 2.6 CBX IP+ 17 2 35.63 S 1 49.08 3.0 2.9 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900218 1839 29.87 31-53.40 115-51.00 1.50 12 0.29 2.3 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD RDX IPC 18 39 31.08 S 1 32.87 EMX EP 2 18 39 39.14 S 1 47.05 ENX EP- 18 39 42.37 S 1 52.23 2.2 PBX EP+ 18 39 43.80 S 2 54.75 CBX EP- 18 39 44.43 S 1 55.80 2.5 2.5 SPX EP 2 18 39 46.31 S 1 58.50 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900220 315 30.59 32- 3.60 116-19.20 3.00* 8 0.08 2.1 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD RDX IPC 3 15 37.02 S 1 42.04 ENX EP 2 3 15 37.16 S 1 41.68 CBX IPC 3 15 37.74 S 1 43.40 2.2 2.2 PBX IPC 3 15 39.17 S 1 45.55 2.1 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900221 1617 22.41 31-41.40 116-42.60 9.00 6 0.11 1.9 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD PBX IPC 16 17 24.22 S 1 25.52 2.0 ENX IPC 16 17 26.14 S 1 29.29 CBX IPD 16 17 33.67 S 1 41.81 1.8 2.2 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900222 1011 2.33 31-16.20 115-34.80 13.30 12 0.09 2.9 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD SPX IPD 10 11 7.40 S 1 10.60 ECBX IPD 10 11 11.10 S 1 18.15 EMX EP+ 10 11 16.00 S 1 26.50 PBX EP- 10 11 21.20 S 1 36.15 ENX EP- 10 11 21.50 S 1 36.20 CBX EP 10 11 26.10 S 2 44.50 2.9 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900222 1126 0.94 32- 9.60 115-46.20 3.00* 10 0.25 2.3 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD EMX EP+1 11 26 9.54 S 1 16.05 2.3 CBX IPC 11 26 14.76 S 1 25.05 2.5 ENX EP- 11 26 15.45 S 1 26.28 ECBX EP 2 11 26 17.29 S 1 29.97 PBX EP- 11 26 17.40 S 4 29.10 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900226 137 43.47 31-29.40 115-32.40 3.00 8 0.36 1.6 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ECBX IPC 1 37 50.99 S 1 56.98 1.6 SPX EP- 1 37 51.45 S 1 58.52 1.6 EMX EP 1 1 37 53.68 S 1 61.90 CBX EP+ 1 38 5.66 S 1 21.80 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900226 8 5 25.30 32-30.00 115-10.20 13.30 12 0.25 3.3 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD LMX EP 8 5 33.00 EMX EP-4 8 5 33.20 ECBX EP+ 8 5 43.41 S 56.59 3.3 CBX EP+ 8 5 47.09 S 1 64.22 3.6 ENX IPC 8 5 49.69 S 68.60 SPX EP+ 8 5 50.84 S 2 70.39 PBX EP+ 8 5 50.94 S 1 71.54 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900226 2217 3.26 31-31.20 115-27.00 4.90 12 0.17 2.5 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ECBX IPC 22 17 9.50 S 1 14.50 SPX IP 22 17 12.00 S 1 18.30 LMX EP 4 22 17 16.80 S 4 26.50 QKP EP+1 22 17 17.20 S 2 27.45 PBX EP 22 17 22.21 S 1 37.25 CBX EP 2 22 17 26.02 S 1 43.11 2.5 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900228 1741 10.20 31-40.80 115-54.00 3.00 20 0.25 3.7 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD RDX IPD 17 41 14.61 S 1 18.76 EMX IP-1 17 41 21.99 S 1 30.90 ENX IPC 17 41 22.37 S 1 32.05 3.6 PBX IPC 17 41 22.83 S 1 32.82 3.6 SPX IP- 17 41 22.99 S 1 33.36 ECBX IP+ 17 41 23.70 S 1 34.00 3.8 QKP IP+ 17 41 24.60 S 1 35.20 CPBX EP 1 17 41 26.20 S 1 38.25 CBX EP+ 17 41 26.37 S 1 38.74 3.9 3.7 LMX IPC2 17 41 27.00 S 1 38.35 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 900228 2343 36.00 34- 8.40 117-41.40 10.00* 16 5.2 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX EPN 23 44 15.91 S 1 51.13 5.2 PBX EPN 23 44 17.64 S 2 53.90 CPBX EPN 23 44 20.01 S 1 57.63 RDX EPN2 23 44 20.19 S 2 57.40 EMX EPN 23 44 25.01 S 1 65.93 LMX EPN2 23 44 26.21 S 2 68.33 ECBX EPN2 23 44 31.76 S 2 78.37 SPX EPN1 23 44 33.62 S 2 81.60