condition	mean	min	max
4 h after light	7692.344444333333	6921.43	8279.353333
8 h after light	7283.988333333334	6949.675	7476.85
12 h after light	7198.781111	6780.17	7755.2
1.5 h after dark	6568.108889	5809.296667	7767.713333
5.5 h after dark	7302.330000333333	6784.216667	7736.476667
9.5 h after dark	8179.635555666667	7230.12	8766.746667