Block 3000000, approx ETH supply 87962556, time '2017-01-16 00:38:33.067775' blocktime 14.86
Block 3500000, approx ETH supply 90612556, time '2017-04-11 18:09:34.273529' blocktime 15.27 (~800$\month profit\farm)
Block 4000000, approx ETH supply 93262556, time '2017-08-15 18:20:24.642729' blocktime 30.01 (~280$\month profit\farm)
... 09-15 blocktime ~37
... 10-15 blocktime ~44
... 11-15 blocktime ~51
... 12-15 blocktime ~58
... 2018-01-15 18:20:24.642729' blocktime 65 (~150$\month profit\farm)
...
Block 4500000, approx ETH supply 95912556, time '2018-11-03 05:55:48.912370' blocktime 136.71
Time to look around and search for another mining target..