SUMMARY HEADER FORMAT YEAR 2000
------- ------ ------ ---- ----
* indicates a new/revised field
Start Fortran
Col. Len. Format Data
1 4 I4 Year. *
5 8 4I2 Month, day, hour and minute.
13 4 F4.2 Origin time seconds.
17 2 F2.0 Latitude (deg). First character must not be blank.
19 1 A1 S for south, blank otherwise.
20 4 F4.2 Latitude (min).
24 3 F3.0 Longitude (deg).
27 1 A1 E for east, blank otherwise.
28 4 F4.2 Longitude (min).
32 5 F5.2 Depth (km).
37 3 F3.2 Magnitude from maximum S amplitude from NCSN stations *
40 3 I3 Number of P & S times with final weights greater than 0.1.
43 3 I3 Maximum azimuthal gap, degrees.
46 3 F3.0 Distance to nearest station (km).
49 4 F4.2 RMS travel time residual.
53 3 F3.0 Azimuth of largest principal error (deg E of N).
56 2 F2.0 Dip of largest principal error (deg).
58 4 F4.2 Size of largest principal error (km).
62 3 F3.0 Azimuth of intermediate principal error.
65 2 F2.0 Dip of intermediate principal error.
67 4 F4.2 Size of intermediate principal error (km).
71 3 F3.2 Coda duration magnitude from NCSN stations. *
74 3 A3 Event location remark. (See table 7 below).
77 4 F4.2 Size of smallest principal error (km).
81 2 2A1 Auxiliary remarks (See note below).
83 3 I3 Number of S times with weights greater than 0.1.
86 4 F4.2 Horizontal error (km).
90 4 F4.2 Vertical error (km).
94 3 I3 Number of P first motions. *
97 4 F4.1 Total of NCSN S-amplitude mag weights ~number of readings.*
101 4 F4.1 Total of NCSN duration mag weights ~number of readings. *
105 3 F3.2 Median-absolute-difference of NCSN S-amp magnitudes.
108 3 F3.2 Median-absolute-difference of NCSN duration magnitudes.
111 3 A3 3-letter code of crust and delay model. (See table 8 below).
114 1 A1 Last authority for earthquake N=NCSC (USGS), B=UC Berkeley.
115 1 A1 Most common P & S data source code. (See table 1 below).
116 1 A1 Most common duration data source code. (See cols. 68-69)
117 1 A1 Most common amplitude data source code.
118 1 A1 Coda duration magnitude type code
119 3 I3 Number of valid P & S readings (assigned weight > 0).
122 1 A1 S-amplitude magnitude type code
123 1 A1 "External" magnitude label or type code. Typically
"L" (=ML) computed by UCB. This information is not computed
by Hypoinverse, but passed along
124 3 F3.2 "External" magnitude.
127 3 F3.1 Total of the "external" magnitude weights (~ number of readings).
130 1 A1 Alternate amplitude magnitude label or type code (i.e. L for
ML calculated by Hypoinverse from Wood Anderson amplitudes).
131 3 F3.2 Alternate amplitude magnitude.
134 3 F3.1 Total of the alternate amplitude mag weights ~no. of readings.
137 10 I10 Event identification number
147 1 A1 Preferred magnitude label code chosen from those available.
148 3 F3.2 Preferred magnitude, chosen by the Hypoinverse PRE command.
151 4 F4.1 Total of the preferred mag weights (~ number of readings). *
155 1 A1 Alternate coda duration magnitude label or type code (i.e. Z).
156 3 F3.2 Alternate coda duration magnitude.
159 4 F4.1 Total of the alternate coda duration magnitude weights. *
163 1 A1 Version number of information: 0=25 pick; 1=Final EW with MD;
2=ML added, etc. 0-9, then A-Z. Hypoinv. passes this through.
164 1 A1 Version # of last human review. blank=unreviewed, 1-9, A-Z.