condition	mean	min	max
4 h after light	8.624493333333334	8.33412	8.83647
8 h after light	8.710363333333333	8.33695	8.936060000000001
12 h after light	8.94662	8.63429	9.11892
4 h after dark	8.67004	8.32841	8.88986
8 h after dark	8.534500000000001	8.20147	8.75125
12 h after dark	8.13015	7.93547	8.25747