condition	mean	min	max
4 h after light	17.94902	17.785364	18.112676
8 h after light	20.582036000000002	20.056988	21.107084
12 h after light	18.552656499999998	18.480749	18.624564
4 h after dark	15.979969	14.832671	17.127267
8 h after dark	13.1152755	11.417688	14.812863
12 h after dark	23.442389	23.442389	23.442389