Here are my analyses of almost 16 000 spins from DublinBet.
The tables are in this order: Dozen 1, Dozen 2, Dozen 3
SUMMARY OF SKIPS
TOTAL FOR SKIP 0: 1608 [zero means it won on the next spin, of course]
TOTAL FOR SKIP 1: 4358
TOTAL FOR SKIP 2: 2942
TOTAL FOR SKIP 3: 1985
TOTAL FOR SKIP 4: 1407
TOTAL FOR SKIP 5: 950
TOTAL FOR SKIP 6: 695
TOTAL FOR SKIP 7: 449
TOTAL FOR SKIP 8: 353
TOTAL FOR SKIP 9: 353
TOTAL FOR SKIP 10: 179
TOTAL FOR SKIP 11: 151
TOTAL FOR SKIP 12: 114
TOTAL FOR SKIP 13: 102
TOTAL FOR SKIP 14: 96
TOTAL FOR SKIP 15: 78
TOTAL FOR SKIP 16: 67
TOTAL FOR SKIP 17: 56
TOTAL FOR SKIP 18: 54
TOTAL FOR SKIP 19: 42
TOTAL FOR SKIP 20: 22
TOTAL FOR SKIP 21: 17
TOTAL FOR SKIP 22: 16
TOTAL FOR SKIP 23: 9
TOTAL FOR SKIP 24: 4
TOTAL FOR SKIP 25: 2
TOTAL FOR SKIP 26: 2
TOTAL FOR SKIP 27: 2
TOTAL FOR SKIP 28: 3
TOTAL FOR SKIP 29: 1
TOTAL FOR SKIP 30: 1
TOTAL FOR SKIP 31: 2
TOTAL FOR SKIP 32: 0
TOTAL FOR SKIP 33: 0
TOTAL FOR SKIP 34: 0
TOTAL FOR SKIP 35: 0
TOTAL FOR SKIP 36: 0
===============
SUMMARY OF SKIPS
TOTAL FOR SKIP 0: 1606
TOTAL FOR SKIP 1: 4343
TOTAL FOR SKIP 2: 2909
TOTAL FOR SKIP 3: 1975
TOTAL FOR SKIP 4: 1402
TOTAL FOR SKIP 5: 977
TOTAL FOR SKIP 6: 665
TOTAL FOR SKIP 7: 460
TOTAL FOR SKIP 8: 355
TOTAL FOR SKIP 9: 355
TOTAL FOR SKIP 10: 204
TOTAL FOR SKIP 11: 155
TOTAL FOR SKIP 12: 127
TOTAL FOR SKIP 13: 93
TOTAL FOR SKIP 14: 87
TOTAL FOR SKIP 15: 66
TOTAL FOR SKIP 16: 58
TOTAL FOR SKIP 17: 56
TOTAL FOR SKIP 18: 42
TOTAL FOR SKIP 19: 33
TOTAL FOR SKIP 20: 37
TOTAL FOR SKIP 21: 21
TOTAL FOR SKIP 22: 18
TOTAL FOR SKIP 23: 11
TOTAL FOR SKIP 24: 6
TOTAL FOR SKIP 25: 5
TOTAL FOR SKIP 26: 4
TOTAL FOR SKIP 27: 2
TOTAL FOR SKIP 28: 2
TOTAL FOR SKIP 29: 3
TOTAL FOR SKIP 30: 1
TOTAL FOR SKIP 31: 1
TOTAL FOR SKIP 32: 1
TOTAL FOR SKIP 33: 1
TOTAL FOR SKIP 34: 1
TOTAL FOR SKIP 35: 1
TOTAL FOR SKIP 36: 1
==============
SUMMARY OF SKIPS
TOTAL FOR SKIP 0: 1538
TOTAL FOR SKIP 1: 4345
TOTAL FOR SKIP 2: 2947
TOTAL FOR SKIP 3: 1945
TOTAL FOR SKIP 4: 1390
TOTAL FOR SKIP 5: 976
TOTAL FOR SKIP 6: 705
TOTAL FOR SKIP 7: 471
TOTAL FOR SKIP 8: 320
TOTAL FOR SKIP 9: 320
TOTAL FOR SKIP 10: 210
TOTAL FOR SKIP 11: 146
TOTAL FOR SKIP 12: 127
TOTAL FOR SKIP 13: 95
TOTAL FOR SKIP 14: 88
TOTAL FOR SKIP 15: 73
TOTAL FOR SKIP 16: 57
TOTAL FOR SKIP 17: 48
TOTAL FOR SKIP 18: 46
TOTAL FOR SKIP 19: 45
TOTAL FOR SKIP 20: 41
TOTAL FOR SKIP 21: 28
TOTAL FOR SKIP 22: 15
TOTAL FOR SKIP 23: 16
TOTAL FOR SKIP 24: 10
TOTAL FOR SKIP 25: 10
TOTAL FOR SKIP 26: 12
TOTAL FOR SKIP 27: 10
TOTAL FOR SKIP 28: 6
TOTAL FOR SKIP 29: 6
TOTAL FOR SKIP 30: 7
TOTAL FOR SKIP 31: 8
TOTAL FOR SKIP 32: 2
TOTAL FOR SKIP 33: 2
TOTAL FOR SKIP 34: 2
TOTAL FOR SKIP 35: 2
TOTAL FOR SKIP 36: 3