Listing of trace header locations

Bytes  (Int*) 	Name                  

  1:  4 (4) 	LINE                
  5:  8 (4) 	REEL                            
  9: 12 (4) 	RECORDNUM           
 13: 16 (4) 	FTRACE              
 17: 20 (4) 	FFID           
 21: 24 (4) 	CDP                 
 25: 28 (4) 	CDPTRACE                       
 29: 30 (2) 	TRTYPE                  
 37: 40 (4) 	OFFSET              
 41: 44 (4) 	REC_HT                         
 45: 48 (4) 	SOURCE_HT           
 69: 70 (2) 	HT_SCALE            
 71: 72 (2) 	COORD_SCALE         
 73: 76 (4) 	SOURCE_X                
 77: 80 (4) 	SOURCE_Y            
 81: 84 (4) 	REC_X               
 85: 88 (4) 	REC_Y               
 89: 90 (2) 	COORD_UNIT          
115:116 (2) 	SAMP_NUM            
117:118 (2) 	SAMP_RATE           
119:120 (2) 	GAIN_TYPE           
121:122 (2) 	INSTR_GAIN_CONSTANT 
123:124 (2) 	INSTR_INIT_GAIN     
141:142 (2) 	ALIAS_FREQ          
143:144 (2) 	ALIAS_SLOPE                      
145:146 (2) 	NOTCH_FREQ          
147:148 (2) 	NOTCH_SLOPE         
149:150 (2) 	LOW_CUT_FREQ            
151:152 (2) 	HIGH_CUT_FREQ       
153:154 (2) 	LOW_CUT_SLOPE       
155:156 (2) 	HIGH_CUT_SLOPE      
157:158 (2) 	YEAR                
181:184 (4) 	SRC_STATION      
185:188 (4) 	REC_STATION     
189:192 (4) 	SRC_LINE     
193:196 (4) 	REC_LINE    
197:200 (4) 	INLINE_NO    
201:204 (4) 	XLINE_NO    
205:208 (4) 	SRC_REC_AZIMUTH    
209:212 (4) 	OFFSET_BIN_NO    
213:216 (4) 	OFFSET_BIN_CENTER    
217:220 (4) 	CDP_FOLD    
221:224 (4) 	CDP_XCOORD   
225:228 (4) 	CDP_YCOORD