File example (LociMutNbandLength.txt):
0 453
0 502
0 488
0 458
0 470
0 464
0 499
0 413
0 440
0 313
0 467
0 489
0 416
0 427
0 422
1 519
0 432
0 506

File example (StrainSampleDates.txt):
249 1993
259 1994
270 1994
529 1939
600 1982
601 1984
656 1964
657 1983
658 1983
659 1986
661 1988
662 1989
664 1990
665 1990
666 1992
668 1993
1289 1977
1294 1995
1296 1996
1339 1996
1344 1996