condition	mean	min	max
4 h after light	7.74994	7.68375	7.8426
8 h after light	7.873043333333333	7.72659	8.030330000000001
12 h after light	7.90526	7.8015	7.973910000000001
4 h after dark	8.056143333333335	7.728460000000001	8.35913
8 h after dark	8.00336	7.89162	8.09781
12 h after dark	7.763863333333333	7.72198	7.81645