condition mean min max 0 h after light 0.0975555 0.0 0.195111 4 h after light 0.0 0.0 0.0 8 h after light 0.1958215 0.193032 0.198611 4 h after dark 0.769525 0.0 1.53905 8 h after dark 0.482829 0.38432 0.581338 12 h after dark 0.0953025 0.0 0.190605