NON_LIN_LOC - Default pick format from NonLinLoc (http://alomax.net/nlloc)
NonLinLoc phase record description:
Station name (char*6) - station name or code
Instrument (char*4) - instument identification for the trace for which the time pick corresponds (i.e. SP, BRB, VBB)
Component (char*4) - component identification for the trace for which the time pick corresponds (i.e. Z, N, E, H)
P phase onset (char*1) - description of P phase arrival onset; i, e
Phase descriptor (char*6) - Phase identification (i.e. P, S, PmP)
First Motion (char*1) - first motion direction of P arrival; c, C, u, U = compression; d, D = dilatation; +, -, Z, N; . or ? = not readable.
Date (yyyymmdd) (int*6) - year (with century), month, day
Hour/minute (hhmm) (int*4) - Hour, min
Seconds (float*7.4) - seconds of phase arrival
Err (char*3) - Error/uncertainty type; GAU
ErrMag (expFloat*9.2) - Error/uncertainty magnitude in seconds
Coda duration (expFloat*9.2) - coda duration reading
Amplitude (expFloat*9.2) - Maxumim peak-to-peak amplitude
Period (expFloat*9.2) - Period of amplitude reading
PriorWt (expFloat*9.2) - A-priori phase weight Currently can be 0 (do not use reading) or 1 (use reading).