condition	mean	min	max
4 h after light	16.298450000000003	14.2729	18.324
8 h after light	16.255850000000002	16.108	16.4037
12 h after light	14.0314	13.8293	14.2335
4 h after dark	20.6613	19.373	21.9496
8 h after dark	21.7211	21.0858	22.3564
12 h after dark	20.6601	19.8597	21.4605