condition	mean	min	max
4 h after light	6.329925	5.87025	6.7896
8 h after light	7.06029	6.85035	7.27023
12 h after light	6.74022	6.72278	6.75766
4 h after dark	4.761995	3.88045	5.64354
8 h after dark	5.70448	5.54125	5.86771
12 h after dark	6.150275	6.13364	6.16691