condition	mean	min	max
4 h after light	19.477710000000002	17.683833	21.271587
8 h after light	17.5483475	17.084588	18.012107
12 h after light	21.8013745	20.778508	22.824241
4 h after dark	16.7809515	15.861351	17.700552
8 h after dark	23.6194815	20.766715	26.472248
12 h after dark	19.920962	19.920962	19.920962