condition mean min max 4 h after light 10.042034000000001 9.719254 10.364814 8 h after light 10.6183735 9.212349 12.024398 12 h after light 10.763508999999999 9.315908 12.21111 4 h after dark 9.711131 9.703008 9.719254 8 h after dark 10.5557485 9.626209 11.485288 12 h after dark 9.553566 9.553566 9.553566