condition	mean	min	max
4 h after light	3.761353333333333	3.7364599999999997	3.8078
8 h after light	3.8174	3.7280900000000003	3.8740900000000003
12 h after light	3.8196233333333334	3.74611	3.88295
4 h after dark	3.819336666666666	3.62417	3.9701699999999995
8 h after dark	3.808043333333333	3.7417599999999998	3.89837
12 h after dark	3.73482	3.7053	3.78115