condition	mean	min	max
4 h after light	4.78005	4.53751	5.02259
8 h after light	4.969355	4.96207	4.97664
12 h after light	6.65122	6.12463	7.17781
4 h after dark	7.28273	6.69942	7.86604
8 h after dark	6.49416	6.44234	6.54598
12 h after dark	6.62653	6.23001	7.02305