condition	mean	min	max
4 h after light	8.86677	8.70791	9.0447
8 h after light	7.901136666666667	7.71628	8.216000000000001
12 h after light	7.058713333333333	6.735310000000001	7.29034
4 h after dark	6.742186666666667	6.52081	7.03135
8 h after dark	7.15665	6.77632	7.437539999999999
12 h after dark	7.57723	7.30742	7.8129800000000005