condition	mean	min	max
4 h after light	8.16147	8.10113	8.23812
8 h after light	7.983093333333334	7.9127600000000005	8.0587
12 h after light	7.984886666666667	7.829689999999999	8.071110000000001
4 h after dark	8.111236666666667	8.105139999999999	8.11968
8 h after dark	8.136113333333332	8.03853	8.25757
12 h after dark	8.14945	8.12237	8.17033