Table 1.

Intervals between regular bleeding times and the time of cervical dilatation (TCD) in h.

	TCD occurred after 08h00 and no later than 18h00 that evening			TCD occurred after 18h00 and no later than 08h00 the next morning			Assumed number of h before TCD that were used in the study
Regular bleeding no.	Time of day	Min. h to TCD	Max. h to TCD	Time of day	Min. h to TCD	Max. h to TCD	Min. h to TCD	Max. h to TCD
1 (last)	08h00	0	10	18h00	0	14	0	12
2 (2nd last)	18h00	14	24	08h00	10	24	12	24
3 (3rd last)	08h00	24	34	18h00	24	38	24	36
4 (4th last)	18h00	38	48	08h00	34	48	36	48
5 (5th last)	08h00	48	58	18h00	48	62	48	60