condition	mean	min	max
4 h after light	17.945999999999998	15.0229	20.8691
8 h after light	17.697699999999998	13.3887	22.0067
12 h after light	22.00155	18.7322	25.2709
4 h after dark	21.24035	17.7941	24.6866
8 h after dark	20.912399999999998	19.3614	22.4634
12 h after dark	23.3446	21.0484	25.6408