condition	mean	min	max
4 h after light	16.92325	14.4555	19.391
8 h after light	13.5863	13.2768	13.8958
12 h after light	19.2115	16.7462	21.6768
4 h after dark	23.7102	22.5134	24.8078
8 h after dark	21.040033333333334	20.2431	22.047
12 h after dark	17.4269	16.7766	18.0833