condition	mean	min	max
4 h after light	20.5279	18.8067	22.2491
8 h after light	10.92515	10.5084	11.3419
12 h after light	8.84977	6.95854	10.741
4 h after dark	10.7187	10.1548	11.4774
8 h after dark	17.6202	15.6125	19.7087
12 h after dark	22.6539	20.3791	24.3841