condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.0282177 0.0 0.0564354 8 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0568495 0.0 0.113699 12 h after dark 0.0 0.0 0.0