condition	mean	min	max
4 h after light	8.566713333333333	8.3252	8.7789
8 h after light	8.53209	8.12857	8.80358
12 h after light	8.536803333333333	8.21229	8.82301
4 h after dark	8.561463333333332	8.01315	9.039639999999999
8 h after dark	8.49945	8.127360000000001	8.74194
12 h after dark	8.532713333333334	8.33436	8.86668