condition	mean	min	max
4 h after light	6.562316666666667	6.322769999999999	6.901730000000001
8 h after light	6.274583333333333	6.16096	6.4560699999999995
12 h after light	5.9531600000000005	5.78064	6.14949
4 h after dark	5.861926666666667	5.56696	6.09219
8 h after dark	6.18762	6.093999999999999	6.27016
12 h after dark	6.57609	6.17464	6.98883