condition	mean	min	max
4 h after light	8.501746666666666	8.35667	8.68779
8 h after light	8.51436	8.47525	8.571019999999999
12 h after light	8.54632	8.4089	8.815489999999999
4 h after dark	8.496293333333334	8.45664	8.552810000000001
8 h after dark	8.54381	8.40904	8.67896
12 h after dark	8.4199	8.33286	8.58257