condition	mean	min	max
4 h after light	6.84167	5.33117	8.35217
8 h after light	7.15917	6.51366	7.80468
12 h after light	4.8803	4.65428	5.10632
4 h after dark	6.425875	6.24167	6.61008
8 h after dark	7.208	7.14445	7.27155
12 h after dark	7.30505	6.63274	7.97736