as per someones suggestion earlier in the thread here is a list of the currently known private keys in relation to their accompanying range sizes in percentages.
sorted = [0.0, 0.06, 0.08, 0.09, 0.1, 0.12, 0.13, 0.17, 0.18, 0.19, 0.22, 0.23, 0.27, 0.28, 0.31, 0.32, 0.33, 0.35, 0.36, 0.38, 0.4, 0.43, 0.44, 0.45, 0.46, 0.49, 0.5, 0.51, 0.53, 0.57, 0.62, 0.63, 0.64, 0.65, 0.66, 0.67, 0.68, 0.69, 0.7, 0.72, 0.75, 0.82, 0.87, 0.91, 0.92, 0.95, 0.96, 0.97] (48 unique values)
sorted (raw) = [0.0, 0.0, 0.00390625, 0.0693586707348004, 0.08560360020207014, 0.09034376966231544, 0.10738698705333893, 0.1279296875, 0.13666732696611916, 0.17072322126477957, 0.1777045763192291, 0.1875, 0.19316889756160655, 0.2273166453323929, 0.23364647093694657, 0.23667356096793157, 0.2734375, 0.287109375, 0.2887251778456132, 0.31005859375, 0.3125, 0.3166639075566309, 0.32627265442988573, 0.33485841751098633, 0.3586072690006503, 0.3638877868652344, 0.36981157668053144, 0.3876168823447197, 0.4023493269008403, 0.43391395367944174, 0.43408918380737305, 0.44051053281873465, 0.45348233016493467, 0.4588522112899227, 0.46112229085167655, 0.4621429443359375, 0.4927569553256035, 0.5, 0.5018395352846268, 0.5149424275913058, 0.5157241821289062, 0.53125, 0.57196044921875, 0.6253847479820251, 0.63983154296875, 0.6439841804320401, 0.6453061435604468, 0.6466464996337891, 0.6571150545548307, 0.6618142630904913, 0.6678542153963616, 0.6681841164827347, 0.6797900857488876, 0.6847959722838368, 0.6949864005878701, 0.6960085034370422, 0.7005655069250736, 0.7200322151184082, 0.7278327941894531, 0.75, 0.75, 0.7513186500162874, 0.8217038442259545, 0.82421875, 0.8256312850098766, 0.8285546544961626, 0.8289294721848898, 0.8725002169265093, 0.9185453074950023, 0.9244143441319466, 0.9500958897872267, 0.9580019181594253, 0.9689828764301732, 0.9780104756355286]
the missing points would be these ranges:
['8147ae147ae14800:828f5c28f5c29000', '828f5c28f5c29000:83d70a3d70a3d800', '83d70a3d70a3d800:851eb851eb852000', '851eb851eb852000:8666666666666800', '8666666666666800:87ae147ae147b000', '88f5c28f5c28f800:8a3d70a3d70a4000', '8e147ae147ae1800:8f5c28f5c28f6000', '91eb851eb851f000:9333333333333000', '9333333333333000:947ae147ae147800', '947ae147ae147800:95c28f5c28f5c000', '9999999999999800:9ae147ae147ae000', '9ae147ae147ae000:9c28f5c28f5c2800', '9eb851eb851eb800:a000000000000000', 'a000000000000000:a147ae147ae14800', 'a147ae147ae14800:a28f5c28f5c29000', 'a51eb851eb852000:a666666666666800', 'a666666666666800:a7ae147ae147b000', 'ab851eb851eb8800:acccccccccccd000', 'af5c28f5c28f6000:b0a3d70a3d70a000', 'b1eb851eb851f000:b333333333333000', 'b47ae147ae147800:b5c28f5c28f5c000', 'b5c28f5c28f5c000:b70a3d70a3d70800', 'bc28f5c28f5c2800:bd70a3d70a3d7000', 'bd70a3d70a3d7000:beb851eb851eb800', 'c28f5c28f5c29000:c3d70a3d70a3d800', 'c51eb851eb852000:c666666666666800', 'c666666666666800:c7ae147ae147b000', 'c7ae147ae147b000:c8f5c28f5c28f800', 'ca3d70a3d70a4000:cb851eb851eb8000', 'cb851eb851eb8000:ccccccccccccd000', 'ccccccccccccd000:ce147ae147ae1000', 'ce147ae147ae1000:cf5c28f5c28f6000', 'dae147ae147ae000:dc28f5c28f5c2800', 'dd70a3d70a3d7000:deb851eb851eb800', 'deb851eb851eb800:e000000000000000', 'e147ae147ae14800:e28f5c28f5c29000', 'e28f5c28f5c29000:e3d70a3d70a3d800', 'e3d70a3d70a3d800:e51eb851eb852000', 'e51eb851eb852000:e666666666666800', 'e666666666666800:e7ae147ae147b000', 'e7ae147ae147b000:e8f5c28f5c28f800', 'ea3d70a3d70a4000:eb851eb851eb8000', 'eb851eb851eb8000:ecccccccccccd000', 'ecccccccccccd000:ee147ae147ae1000', 'ee147ae147ae1000:ef5c28f5c28f6000', 'f0a3d70a3d70a000:f1eb851eb851f000', 'f1eb851eb851f000:f333333333333000', 'f333333333333000:f47ae147ae148000', 'f70a3d70a3d71000:f851eb851eb85000', 'f851eb851eb85000:f999999999999800', 'fd70a3d70a3d7000:feb851eb851eb800', 'feb851eb851eb800:ffffffffffffffff']
though that does not help much each range in the 63bit key range would take approximately 18,000 hours on Bitcrack with 1400Mk/s