EPICENTRAL LOCATIONS AND ARRIVAL TIMES DECEMBER 1981 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 811201 2356 9.91 31-48.44 116-40.75 4.38 7 150 8.5 0.28 2.4 3.7 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX IPD 23 56 11.98 S 12.87 CBX EP 23 56 20.31 S 27.28 CIP IPD 23 56 11.63 PTB IPD 23 56 12.45 S 12.85 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 811202 1509 10.15 31-47.57 116-40.48 9.26 8 143 7.4 0.34 3.6 2.9 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX IPD 15 9 12.74 CBX EP 15 9 20.82 S 27.51 CIP IPD 15 9 12.60 S 14.02 PTB IPU 15 9 12.17 S 13.61 CCS IPU 15 9 12.63 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 811202 1654 55.13 31-47.37 116-40.05 8.36 5 152 7.6 0.01 0.1 0.1 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX IPU 16 54 57.46 S 59.26 CIP IPD 16 54 57.27 PTB IP 16 54 57.10 S 58.65 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 811202 2115 49.39 31-48.59 116-41.58 8.20 8 161 7.0 0.26 2.8 1.4 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX IPD 21 15 51.67 S 52.87 CBX IP 21 15 59.72 S 66.70 CIP IPD 21 15 51.64 CCS IP 21 15 51.66 PTB IPD 21 15 51.37 S 52.83 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 811202 2116 56.44 31-48.17 116-41.50 9.57 9 157 7.5 0.32 3.3 1.3 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX IPD 21 16 58.90 S 60.10 CBX IP 21 16 66.84 S 73.73 CIP IPD 21 16 58.79 CCS IPU 21 16 58.90 S 60.60 PTB IPU 21 16 58.63 S 59.98 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 811202 2117 58.75 31-48.16 116-39.75 9.34 6 138 8.2 0.27 4.3 3.4 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX IPD 21 18 1.16 CBX EP 21 18 9.24 S 16.13 CIP IPD 21 18 0.99 S 2.50 PTB IPD 21 18 0.83 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 811202 2128 55.99 31-48.21 116-41.29 9.89 9 155 7.5 0.33 3.4 1.4 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX IPD 21 28 58.62 S 59.72 CBX IP 21 28 66.42 S 73.14 CIP IPD 21 28 58.33 CCS IPU 21 28 58.36 S 60.16 PTB IPD 21 28 58.23 S 59.63 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 811204 1148 53.56 31-48.12 116-40.72 10.41 7 148 7.5 0.13 1.8 0.7 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX IPD 11 48 56.00 CBX IP+ 11 48 63.80 S 71.00 CIP IPD 11 48 56.00 PTB IPD 11 48 55.78 CCS IPD 11 48 55.80 S 57.55 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 811204 1358 54.50 31-48.55 116-41.51 9.54 6 160 7.1 0.11 2.0 1.2 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX IPD 13 53 56.66 CBX IPD 13 53 64.56 S 71.92 CIP IPD 13 53 57.00 PTB IPD 13 53 56.63 CCS IPU 13 53 56.70 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 811204 1417 9.79 31-48.73 116-41.25 9.74 6 158 6.6 0.21 3.6 2.2 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX IPD 14 17 19.17 CBX IP 14 17 20.02 S 26.91 CIP IPD 14 17 12.25 PTB IPD 14 17 11.95 CCS IPU 14 17 11.90 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 811204 1433 8.19 31-48.51 116-40.25 11.11 6 146 6.6 0.14 2.2 3.3 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX IPD 14 33 10.64 CBX P 4 14 33 0.00 S 25.51 CIP IPD 14 33 10.87 S 12.43 PTB IPD 14 33 10.55 CCS IPU 14 33 10.58 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 811204 1435 14.08 31-48.53 116-39.44 10.46 8 134 6.6 0.24 2.3 1.1 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX IPD 14 35 16.53 CBX IP 14 35 24.22 S 31.10 CIP IPD 14 35 16.50 S 17.95 PTB IPD2 14 35 16.14 CCS IPU 14 35 16.25 S 18.00 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 811204 1436 14.81 31-48.53 116-41.01 9.80 7 154 6.8 0.21 2.8 1.2 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX IPD 14 36 17.13 CBX IP 14 36 25.11 S 32.00 CIP IPD 14 36 17.20 PTB IPD 14 36 16.93 CCS IPU 14 36 16.98 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 811204 1439 53.19 31-47.80 116-40.89 4.12 5 155 7.4 0.04 0.6 3.0 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX IPD 14 39 54.97 CIP IPD 14 39 55.10 S 56.55 PTB IPD 14 39 54.66 CCS IPU 14 39 54.85 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 811204 1549 38.40 31-51.27 116-37.30 5.44 7 143 4.3 0.07 0.7 1.0 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX IPD 15 49 39.70 CBX IP 15 49 47.70 S 54.60 CIP IPD 15 49 39.85 PTB IPD2 15 49 41.29 CCS IPU 15 49 39.66 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 811204 1656 26.35 31-50.64 116-37.32 4.35 5 173 4.8 0.01 0.4 0.7 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX IPD 16 56 27.61 CBX IP 16 56 35.70 S 42.99 CIP IPD 16 56 27.60 CCS IPU 16 56 27.50 ENX IPD 16 56 57.43 CIP IPD 16 56 57.40 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 811204 17 7 34.22 31-51.07 116-36.87 8.10 4 151 5.0 0.02 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX IPD 17 7 36.00 CBX P 4 17 7 0.00 S 50.70 CIP IPD 17 7 35.95 CCS IP+ 17 7 35.85 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 811204 1748 16.95 31-51.56 116-37.06 7.83 7 149 4.5 0.25 3.3 3.4 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX IPD 17 48 18.33 CBX EP 17 48 26.60 S 33.00 CIP IPD 17 48 18.68 S 20.18 CCS IPU 17 48 18.30 S 20.00 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 811205 3 1 13.93 31-47.80 116-39.38 10.18 7 149 7.7 0.30 3.7 1.6 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX IPD 3 1 16.53 CBX IP 3 1 24.62 S 31.30 CIP IPD 3 1 16.04 PTB IPD 3 1 16.13 CCS IPU 3 1 16.23 S 17.93 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 811210 721 35.79 31- 4.85 116-36.46 28.58 4 186 22.6 0.00 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX IPD 7 21 41.62 CBX IP 7 21 42.20 S 47.20 CIP IP- 7 21 42.41 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 811215 2150 1.35 31-49.40 116-41.59 9.13 6 164 7.1 0.37 5.6 2.5 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX IPD 21 50 3.40 S 5.00 CBX IP 21 50 11.80 S 18.00 CIP IPD 21 50 3.80 PTB IPD 21 50 3.50 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 811219 141 17.52 31-47.73 116-40.09 8.00* 5 144 8.0 0.15 0.8 1.5 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX IP 1 41 19.97 S 21.26 CIP IPD 1 41 19.71 S 21.13 PTB IPD 1 41 19.42 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 811219 1321 3.65 31-47.63 116-39.72 10.46 6 149 8.3 0.19 2.7 1.2 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX IPD 13 21 6.26 S 8.15 CBX IPU 13 21 14.04 S 21.23 CIP IPD 13 21 5.91 PTB IPD 13 21 5.89 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 811219 1615 59.90 31-48.04 116-40.72 9.58 7 147 7.9 0.24 2.2 1.4 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX IP 16 16 2.00 S 4.20 CBX EP 16 16 10.30 S 17.40 CIP IPD 16 16 2.53 S 3.98 PTB IPD 16 16 1.94 DATE ORIGIN LAT N LONG W DEPTH NO GAP DMIN RMS ERH ERZ MAG 811224 1134 41.24 31-51.03 116-36.49 4.11 5 152 5.3 0.07 2.0 4.8 STATION PHASE TIME OF P PHASE TIME OF S MLR MLD ENX IPD 11 34 42.69 CBX IPU 11 34 50.48 S 57.67 CIP IPD 11 34 42.42 CCS IPU 11 34 42.35