File:    NrecxLrec    Unix        Z  Explanation
 J/ApJS/51/67/ReadMe:     165x80       9349     4294 5 GHz obs. of Arecibo 611MHz Sources (Lawrence+ 1983)
J/ApJS/51/67/table1.dat:  126x35       4359     2236 Calibration sources
J/ApJS/51/67/table2.dat:  133x36       4921     2269 Accurate source positions
J/ApJS/51/67/table4.dat: 3118x100    308777    92145 Source List
J/ApJS/51/67  =====>:    3542x100    327406   100944