Table 1. R-tymp peak pressure (dPa) during six consecutive days of diving in 28 divers (P < 0.001); ∗ Day 1 value is significantly different to values on days 2–6 (pair-by-pair comparison, all P < 0.05) .

Day	Mean	95% confidence interval
1∗	-9.6	-22 to 2.8
2	13.9	1.8 to 26
3	21.3	9.4 to 33.2
4	17.9	7 to 28.9
5	18.8	6.8 to 30.7
6	17	4.9 to 29.2
7	10.8	-9.3 to 31