condition mean min max 4 h after light 9.023226999999999 8.946314 9.10014 8 h after light 8.4702265 7.511788 9.428665 12 h after light 8.1779415 7.633884 8.721999 4 h after dark 9.875931 9.577399 10.174463 8 h after dark 8.941825999999999 8.815425 9.068227 12 h after dark 10.173615 10.173615 10.173615