condition	mean	min	max
4 h after light	21.7427	20.1749	23.3105
8 h after light	17.774700000000003	16.4431	19.1063
12 h after light	19.3904	17.4789	21.3019
4 h after dark	17.07985	15.1999	18.9598
8 h after dark	19.0073	16.7179	21.2967
12 h after dark	24.518549999999998	22.4846	26.5525