condition	mean	min	max
3 h after light	18.2135	17.6341	19.1732
6 h after light	18.1052	14.9371	20.8861
9 h after light	18.9868	16.7107	22.9858
12 h after light	20.9934	19.7731	21.9679
3 h after dark	19.720233333333333	19.2165	20.473
6 h after dark	20.27756666666667	19.7944	21.0481
9 h after dark	15.6963	13.8953	17.9984
12 h after dark	17.618650000000002	16.9142	18.3231