condition	mean	min	max
4 h after light	17.887549999999997	16.5658	19.2093
8 h after light	21.3561	20.7584	21.9538
12 h after light	17.74595	17.7047	17.7872
4 h after dark	27.907266666666665	25.8198	30.7858
8 h after dark	22.178533333333334	18.4684	27.218
12 h after dark	16.62623333333333	9.2855	20.8373