#12 .tab file entries occasionally backward in time

[W Sanders]

I am seeing some entries in my .tab files that
occasionally have backwards-moving times:

13.7131 20.7 18.6 47 48 9 8
1000 1015 70 0 70 0 19
0 0

13.7236 20.7 18.6 47 47 9 7
1000 1015 150 0 150 0 19
0 0

13.7250 20.7 18.6 47 47 9 7
1000 1015 140 0 140 0 19
0 0

13.7236 20.7 18.5 47 47 9 7
1000 1015 140 0 140 0 19
0 0

13.7442 20.7 18.5 47 46 9 7
1000 1015 40

I'll post more info as I investigate this further.