00001 hdr[1].offs = 00002 offsetof(segy, tracr); 00003 hdr[2].offs = 00004 offsetof(segy, fldr); 00005 hdr[3].offs = 00006 offsetof(segy, tracf); 00007 hdr[4].offs = 00008 offsetof(segy, ep); 00009 hdr[5].offs = 00010 offsetof(segy, cdp); 00011 hdr[6].offs = 00012 offsetof(segy, cdpt); 00013 hdr[7].offs = 00014 offsetof(segy, trid); 00015 hdr[8].offs = 00016 offsetof(segy, nvs); 00017 hdr[9].offs = 00018 offsetof(segy, nhs); 00019 hdr[10].offs = 00020 offsetof(segy, duse); 00021 hdr[11].offs = 00022 offsetof(segy, offset); 00023 hdr[12].offs = 00024 offsetof(segy, gelev); 00025 hdr[13].offs = 00026 offsetof(segy, selev); 00027 hdr[14].offs = 00028 offsetof(segy, sdepth); 00029 hdr[15].offs = 00030 offsetof(segy, gdel); 00031 hdr[16].offs = 00032 offsetof(segy, sdel); 00033 hdr[17].offs = 00034 offsetof(segy, swdep); 00035 hdr[18].offs = 00036 offsetof(segy, gwdep); 00037 hdr[19].offs = 00038 offsetof(segy, scalel); 00039 hdr[20].offs = 00040 offsetof(segy, scalco); 00041 hdr[21].offs = 00042 offsetof(segy, sx); 00043 hdr[22].offs = 00044 offsetof(segy, sy); 00045 hdr[23].offs = 00046 offsetof(segy, gx); 00047 hdr[24].offs = 00048 offsetof(segy, gy); 00049 hdr[25].offs = 00050 offsetof(segy, counit); 00051 hdr[26].offs = 00052 offsetof(segy, wevel); 00053 hdr[27].offs = 00054 offsetof(segy, swevel); 00055 hdr[28].offs = 00056 offsetof(segy, sut); 00057 hdr[29].offs = 00058 offsetof(segy, gut); 00059 hdr[30].offs = 00060 offsetof(segy, sstat); 00061 hdr[31].offs = 00062 offsetof(segy, gstat); 00063 hdr[32].offs = 00064 offsetof(segy, tstat); 00065 hdr[33].offs = 00066 offsetof(segy, laga); 00067 hdr[34].offs = 00068 offsetof(segy, lagb); 00069 hdr[35].offs = 00070 offsetof(segy, delrt); 00071 hdr[36].offs = 00072 offsetof(segy, muts); 00073 hdr[37].offs = 00074 offsetof(segy, mute); 00075 hdr[38].offs = 00076 offsetof(segy, ns); 00077 hdr[39].offs = 00078 offsetof(segy, dt); 00079 hdr[40].offs = 00080 offsetof(segy, gain); 00081 hdr[41].offs = 00082 offsetof(segy, igc); 00083 hdr[42].offs = 00084 offsetof(segy, igi); 00085 hdr[43].offs = 00086 offsetof(segy, corr); 00087 hdr[44].offs = 00088 offsetof(segy, sfs); 00089 hdr[45].offs = 00090 offsetof(segy, sfe); 00091 hdr[46].offs = 00092 offsetof(segy, slen); 00093 hdr[47].offs = 00094 offsetof(segy, styp); 00095 hdr[48].offs = 00096 offsetof(segy, stas); 00097 hdr[49].offs = 00098 offsetof(segy, stae); 00099 hdr[50].offs = 00100 offsetof(segy, tatyp); 00101 hdr[51].offs = 00102 offsetof(segy, afilf); 00103 hdr[52].offs = 00104 offsetof(segy, afils); 00105 hdr[53].offs = 00106 offsetof(segy, nofilf); 00107 hdr[54].offs = 00108 offsetof(segy, nofils); 00109 hdr[55].offs = 00110 offsetof(segy, lcf); 00111 hdr[56].offs = 00112 offsetof(segy, hcf); 00113 hdr[57].offs = 00114 offsetof(segy, lcs); 00115 hdr[58].offs = 00116 offsetof(segy, hcs); 00117 hdr[59].offs = 00118 offsetof(segy, year); 00119 hdr[60].offs = 00120 offsetof(segy, day); 00121 hdr[61].offs = 00122 offsetof(segy, hour); 00123 hdr[62].offs = 00124 offsetof(segy, minute); 00125 hdr[63].offs = 00126 offsetof(segy, sec); 00127 hdr[64].offs = 00128 offsetof(segy, timbas); 00129 hdr[65].offs = 00130 offsetof(segy, trwf); 00131 hdr[66].offs = 00132 offsetof(segy, grnors); 00133 hdr[67].offs = 00134 offsetof(segy, grnofr); 00135 hdr[68].offs = 00136 offsetof(segy, grnlof); 00137 hdr[69].offs = 00138 offsetof(segy, gaps); 00139 hdr[70].offs = 00140 offsetof(segy, otrav); 00141 hdr[71].offs = 00142 offsetof(segy, d1); 00143 hdr[72].offs = 00144 offsetof(segy, f1); 00145 hdr[73].offs = 00146 offsetof(segy, d2); 00147 hdr[74].offs = 00148 offsetof(segy, f2); 00149 hdr[75].offs = 00150 offsetof(segy, ungpow); 00151 hdr[76].offs = 00152 offsetof(segy, unscale); 00153 hdr[77].offs = 00154 offsetof(segy, ntr); 00155 hdr[78].offs = 00156 offsetof(segy, mark); 00157 hdr[79].offs = 00158 offsetof(segy, shortpad);