condition mean min max 4 h after light 5.112673333333333 5.0473 5.23684 8 h after light 5.155203333333334 5.09734 5.2518199999999995 12 h after light 5.097126666666667 5.015630000000001 5.21702 4 h after dark 5.015946666666666 4.94549 5.0599099999999995 8 h after dark 5.15852 5.07596 5.27134 12 h after dark 5.08025 4.9713 5.18728