condition	mean	min	max
4 h after light	16.8427	14.6395	19.0459
8 h after light	15.609	15.3737	15.8443
12 h after light	21.9054	20.4423	23.3685
4 h after dark	23.126033333333332	21.5953	23.9306
8 h after dark	26.2596	24.4332	28.7417
12 h after dark	19.223566666666667	12.9091	24.2829