condition mean min max 4 h after light 6.17026 5.886 6.45452 8 h after light 2.82332 2.30675 3.33989 12 h after light 2.907075 2.69225 3.1219 4 h after dark 4.84932 4.27034 5.5335 8 h after dark 4.813623333333334 2.86295 6.37429 12 h after dark 6.848586666666667 3.13951 8.82714