condition	mean	min	max
4 h after light	6.010120000000001	5.47663	6.54361
8 h after light	5.482755	5.43338	5.53213
12 h after light	6.122605	5.60134	6.64387
4 h after dark	7.11285	7.08659	7.13911
8 h after dark	7.246105	6.55114	7.94107
12 h after dark	8.146795000000001	7.38093	8.91266