condition	mean	min	max
4 h after light	17.9484	16.4789	19.4179
8 h after light	7.173835	7.11339	7.23428
12 h after light	7.40465	6.23163	8.57767
4 h after dark	12.3492	11.7806	13.3785
8 h after dark	14.0036	11.5523	16.3593
12 h after dark	17.441233333333333	16.6438	18.0758