can anyone explain this to me (not the first or last time)17:08...

can anyone explain this to me (not the first or last time)

17:08 807,334 59.5 113,094 SX XT
16:59 807,198 82.5 -2,839 XT
16:58 807,158 81 -1,186 XT
16:58 807,146 80.5 -60,000 XT
16:58 807,142 80.5 -1,000 XT
16:58 807,140 80.5 -15,463 XT
16:52 807,003 59.5 40,391 SX XT
16:49 806,803 59.5 121,172 SX XT
16:47 806,603 59.5 80,781 SX XT
16:43 806,398 59.5 48,469 SX XT
16:37 806,154 59.5 -48,469 SX XT
16:35 805,925 59.5 40,391 SX XT
16:32 805,445 59.5 48,469 SX XT
16:25 805,309 80 -4,549 NX XT
16:23 805,142 59.5 40,391 SX XT
16:22 804,937 84 59,013 ET XT
16:21 804,821 81.5 -2,000 XT
16:21 804,809 81 -600 XT
16:21 804,807 78 -97,831 XT
16:10 798,933 84 54,228
16:10 798,931 84 19,030
16:10 798,927 84 5,000
16:10 798,922 84 13,000
16:10 798,918 84 10,000
16:10 798,913 84 20,000


Besides the "usual" reversals - that you and I can't do - how can the special crossing be done @ 59.5 ????