condition	mean	min	max
4 h after light	8.60568	8.53021	8.68115
8 h after light	9.44276	9.3921	9.49342
12 h after light	8.05395	6.06	10.0479
4 h after dark	12.66725	12.2818	13.0527
8 h after dark	11.3706	10.9018	11.8394
12 h after dark	9.876909999999999	7.65292	12.1009