condition	mean	min	max
4 h after light	8.979475	8.60723	9.35172
8 h after light	8.339690000000001	7.79467	8.88471
12 h after light	8.396165	8.31	8.48233
4 h after dark	10.853976666666666	9.37203	11.8766
8 h after dark	8.29058	6.15182	10.304
12 h after dark	9.35117	6.97331	11.0461