condition	mean	min	max
4 h after light	6.29526	6.17926	6.43637
8 h after light	6.6882866666666665	6.55915	6.811139999999999
12 h after light	6.7101966666666675	6.631710000000001	6.79403
4 h after dark	6.590256666666667	6.48626	6.71881
8 h after dark	6.52309	6.50204	6.5643
12 h after dark	6.100169999999999	5.917669999999999	6.32214