condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.1023545 0.0 0.204709 8 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0997675 0.0 0.199535 12 h after dark 0.0 0.0 0.0