condition	mean	min	max
4 h after light	6.86419	5.96024	7.76814
8 h after light	6.877295	6.8306	6.92399
12 h after light	7.476515000000001	6.86831	8.08472
4 h after dark	11.552200000000001	10.8507	12.1049
8 h after dark	10.8305	10.2692	11.8627
12 h after dark	7.5043	6.33198	8.10976