condition	mean	min	max
4 h after light	6.624829999999999	6.468	6.78166
8 h after light	7.05891	6.81949	7.29833
12 h after light	6.12712	5.36178	6.89246
4 h after dark	8.15098	7.62781	8.67415
8 h after dark	8.219484999999999	8.0468	8.39217
12 h after dark	8.040675	7.90231	8.17904