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 0.0412502 0.0 0.0825004 4 h after dark 0.02718125 0.0 0.0543625 8 h after dark 0.054485 0.0 0.10897 12 h after dark 0.1877415 0.0 0.375483