condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.0491106 0.0 0.0982212 8 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0481337 0.0 0.0962674