condition mean min max 0 h after light 9.854305 8.86241 10.8462 2 h after light 11.3315 11.1211 11.5419 4 h after light 7.61122 7.43139 7.79105 8 h after light 9.864525 9.13325 10.5958 12 h after light 16.65505 16.5277 16.7824 2 h after dark 10.9779 10.2189 11.7369 4 h after dark 8.841765 8.76898 8.91455 8 h after dark 11.26145 10.645 11.8779 12 h after dark 9.09727 8.46435 9.73019