GIS data file contains the following records:
 
        0   1485381
      113   1496144
      214   1485337
      348   1484825
      447   1495926
      545   1483281
      670   1492871
      766   1483145
      890   1485984
     1023   1483647
     1130   1482123
     1263   1485866
     1392   1927411
     1510   1496241
     1614   1488460
     1744   1481853
     1858   1482657
     1988   1481379
     2115   1673764
     2208   1484418
     2341   1482073
     2453   1485563
     2585   1487819
     2686   1487971
     2825   1499051
     2927   1690054
     3055   1488326
     3185   1485302
     3287   1483527
     3415   1496000
     3514   1485682
     3613   1495470
     3712   1485495
     3815   1690063
     3943   1483314
     4070   1484507
     4196   1673776
     4303   1485455
     4429   1485141
     4560   1486028
     4663   1483917
     4796   1485012
 
 1: report  	3055
    1488326  Whiteman Run  38d 25m 4s North  79d 22m 36s West
 2: report  	0
    1485381  Middle Mountain Trail  38d 33m 48s North  79d 35m 38s West
 3: report  	-695
    Negative offset.
 4: report  	4429
    1485141  Lynn Hollow  38d 23m 2s North  79d 21m 23s West
 5: report  	5598
    Offset too large.
 6: report  	2927
    1690054  Warwick Run  38d 17m 10s North  79d 44m 48s West
 7: report  	1614
    1488460  Wolfe Draft  38d 17m 55s North  79d 27m 1s West
 8: report  	113
    1496144  Rich Hills  38d 24m 53s North  79d 33m 37s West
 9: report  	890
    1485984  Opossum Hollow  38d 20m 53s North  79d 28m 52s West
 10: report  	3185
    1485302  McGuffin Trail  38d 14m 11s North  79d 44m 4s West
 11: report  	3943
    1483314  Erwin Draft  38d 17m 27s North  79d 44m 30s West
 12: report  	4796
    1485012  Lockridge Memorial Church  38d 14m 9s North  79d 35m 38s West
 13: report  	4560
    1486028  Paddy Knob  38d 15m 56s North  79d 47m 47s West
 14: report  	1023
    1483647  Ginseng Mountain  38d 28m 50s North  79d 31m 40s West
 15: report  	16
    Unaligned offset.
 16: report  	4663
    1483917  Hamilton Draft  38d 16m 9s North  79d 29m 14s West
 17: report  	2585
    1487819  Bump, The  38d 13m 20s North  79d 27m 55s West
 18: report  	2825
    1499051  Alum Rock  38d 12m 36s North  79d 32m 28s West
 19: report  	3514
    1485682  Mountain Path  38d 25m 46s North  79d 40m 24s West
 20: report  	214
    1485337  Meadow Draft  38d 15m 8s North  79d 30m 25s West
 21: quit  	
    Exiting.