condition	mean	min	max
4 h after light	6.852993333333334	6.76315	6.9379800000000005
8 h after light	6.9139	6.87365	6.955419999999999
12 h after light	6.98283	6.8731	7.095439999999999
4 h after dark	7.02588	6.8916	7.1209
8 h after dark	7.017320000000001	6.7796	7.13808
12 h after dark	7.060006666666667	6.96126	7.161160000000001