condition	mean	min	max
4 h after light	7.056190000000001	6.889310000000001	7.211130000000001
8 h after light	6.7867766666666665	6.779160000000001	6.79735
12 h after light	6.6379	6.41739	6.92134
4 h after dark	6.931893333333333	6.885489999999999	6.98485
8 h after dark	6.825986666666667	6.5214300000000005	7.05722
12 h after dark	7.21392	6.9459	7.41027