condition	mean	min	max
4 h after light	49.6529	47.2849	52.0209
8 h after light	29.266849999999998	28.7553	29.7784
12 h after light	19.8582	19.6889	20.0275
4 h after dark	16.65005	16.5261	16.774
8 h after dark	28.17185	27.5649	28.7788
12 h after dark	35.8945	34.5368	37.2522