condition	mean	min	max
4 h after light	52.6114	50.482	54.7408
8 h after light	21.67335	21.1053	22.2414
12 h after light	19.1411	18.4599	19.8223
4 h after dark	15.6292	15.5064	15.752
8 h after dark	22.00265	21.499	22.5063
12 h after dark	39.2053	38.9802	39.4304