Last column ...
is
DIFFICULTY.478651 2017-08-06 08:36 23 39.242 8,000.000 144323701657.02
478650 2017-08-06 08:33 70 43.457 8,000.000 144323701657.02
478649 2017-08-06 08:25 429 356.519 8,000.000 144323701657.02
478648 2017-08-06 07:19 124 59.328 8,000.000 144323701657.02
478647 2017-08-06 06:59 212 135.036 8,000.000 180404627071.27
478646 2017-08-06 06:25 126 65.945 8,000.000 225505642691.99
478645 2017-08-06 06:08 287 321.857 8,000.000 225505642691.99
478644 2017-08-06 05:53 1,082 999.143 8,000.000 225505642691.99
478643 2017-08-06 02:21 545 493.871 8,000.000 225505642691.99
51% attack is more easy now ... than ever in the REAL BITCOIN Network.