condition	mean	min	max
4 h after light	15.739149999999999	14.7997	16.6786
8 h after light	18.930149999999998	17.8587	20.0016
12 h after light	14.777550000000002	13.4501	16.105
4 h after dark	19.21595	16.8898	21.5421
8 h after dark	17.0903	16.666	17.5146
12 h after dark	22.23225	21.1306	23.3339