condition	mean	min	max
4 h after light	6.017426666666667	5.86839	6.09365
8 h after light	6.02951	6.00336	6.0692900000000005
12 h after light	5.8999	5.8633	5.94612
4 h after dark	5.79459	5.6770000000000005	5.9972199999999996
8 h after dark	6.160153333333334	5.96385	6.2634300000000005
12 h after dark	5.915570000000001	5.84158	6.03664