condition	mean	min	max
4 h after light	4543.9	4543.9	4543.9
8 h after light	4098.15	3841.9	4354.4
12 h after light	3896.8	3491.8	4301.8
4 h after dark	5634.65	3855.3	7414.0
8 h after dark	7612.4	6749.2	8475.6
12 h after dark	7510.55	6836.6	8184.5