condition	mean	min	max
4 h after light	15.13885	13.3918	16.8859
8 h after light	13.35995	12.8393	13.8806
12 h after light	14.9448	13.9127	15.9769
4 h after dark	22.04345	19.2491	24.8378
8 h after dark	17.8547	14.4235	21.2859
12 h after dark	21.1387	20.7672	21.5102