condition mean min max 4 h after light 11.896370000000001 11.602297 12.190443 8 h after light 15.791178 15.651436 15.93092 12 h after light 14.204553 12.654973 15.754133 4 h after dark 13.1199665 11.283757 14.956176 8 h after dark 10.2475725 9.920833 10.574312 12 h after dark 12.519376 12.519376 12.519376