condition mean min max 0 h after light 0.662593 0.611037 0.714149 4 h after light 0.866905 0.830136 0.903674 8 h after light 2.04567 1.91434 2.177 4 h after dark 2.80588 2.7112 2.90056 8 h after dark 1.814265 1.50449 2.12404 12 h after dark 1.2513445 0.711919 1.79077