condition	mean	min	max
3 h after light	17.1253	16.0415	17.9761
6 h after light	18.8238	17.5202	20.3993
9 h after light	18.0959	16.0448	19.3597
12 h after light	17.7578	15.8021	20.421
3 h after dark	20.5057	18.7223	21.9509
6 h after dark	21.65863333333333	19.0738	25.0737
9 h after dark	19.776766666666667	18.0155	20.7873
12 h after dark	18.92535	18.6014	19.2493