condition mean min max 4 h after light 1.6293799999999998 1.24738 2.01138 8 h after light 1.905165 1.77331 2.03702 12 h after light 0.9824219999999999 0.907504 1.05734 4 h after dark 2.459675 1.87505 3.0443 8 h after dark 2.3194049999999997 2.21422 2.42459 12 h after dark 1.7120950000000001 1.66286 1.76133