GIS data file contains the following records:

265   1479116
415   1481345
537   1481852
665   1481878
825   1482110
947   1482176
1103   1482324
1228   1482434
1351   1482557
1511   1482785
1663   1482950
1820   1483281
1972   1483492
2096   1483527
2250   1483647
2373   1483860
2496   1483916
2623   1484097
2762   1484099
2904   1484101
3027   1484292
3187   1484379
3312   1484574
3464   1484664
3588   1484722
3743   1484896
3870   1485337
4029   1485495
4151   1485521
4278   1485860
4406   1486118
4559   1486630
4680   1486995
4846   1487013
4969   1487250
5125   1487423
5252   1487661
5409   1487758
5569   1487894
5698   1488054
5819   1488106
5979   1488259
6141   1488320
6292   1488473
6444   1488515
6584   1491209
6720   1495244
6846   1495400
6979   1495470
7097   1496000
7226   1496110
7355   1496144
7474   1496194
7595   1496241
7721   1496325
7848   1496326
7968   1498517
8104   1498741
8228   1673765
8367   1673766
8511   1673775
8655   1673777
8799   1673781
8940   1674156
9071   1690628
9194   1707152
9331   1927411
9469   2075297
9599   2076148
9726   2391311

1: report  	2096
   1483527  Frank Run  38d 29m 53s North  79d 33m 10s West
2: report  	947
   1482176  Burners Run  38d 25m 9s North  79d 34m 9s West
3: report  	6444
   1488515  Hannah Field Airport  38d 23m 54s North  79d 36m 1s West
4: report  	-21
   Offset is not positive.
5: report  	0
   Offset is not positive.
6: report  	1527
   Unaligned offset.
7: report  	100000
   Offset too large.
8: quit  	
   Exiting.