condition	mean	min	max
4 h after light	17.608951	16.376346	18.841556
8 h after light	18.3536425	16.376346	20.330939
12 h after light	16.146712	15.976089	16.317335
4 h after dark	15.4457275	14.515109	16.376346
8 h after dark	16.535265000000003	14.984206	18.086324
12 h after dark	15.682787	15.682787	15.682787