condition	mean	min	max
4 h after light	18.7405	18.2082	19.2728
8 h after light	16.12415	15.6953	16.553
12 h after light	14.905199999999999	13.6528	16.1576
4 h after dark	18.395899999999997	17.2885	19.5033
8 h after dark	15.26465	15.2517	15.2776
12 h after dark	18.611800000000002	18.4404	18.7832