condition	mean	min	max
0 h after light	20.32345	19.1846	21.4623
4 h after light	19.14855	16.7747	21.5224
8 h after light	11.9705	11.2639	12.6771
4 h after dark	20.0596	16.9525	23.1667
8 h after dark	20.562	20.486	20.638
12 h after dark	20.27565	19.3423	21.209