condition mean min max 4 h after light 3.8944900000000002 3.84668 3.9341800000000005 8 h after light 3.93561 3.92699 3.9484 12 h after light 4.0061599999999995 3.9151 4.10694 4 h after dark 3.9536666666666664 3.93341 3.9806 8 h after dark 3.9200833333333334 3.87955 3.9405 12 h after dark 3.856136666666667 3.8492800000000003 3.86275