condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 4 h after dark 0.0199206 0.0 0.0597618 8 h after dark 0.00017621233333333332 0.0 0.000528637 12 h after dark 0.03478033333333334 0.0 0.104341