condition mean min max 3 h after light 11.001 10.4037 12.1381 6 h after light 12.120233333333333 10.9914 13.7707 9 h after light 13.585133333333333 12.0928 15.0442 12 h after light 15.731325 14.8651 17.2821 3 h after dark 20.333 19.3295 22.2272 6 h after dark 17.6308 17.0166 18.7542 9 h after dark 15.416766666666666 13.6419 17.3755 12 h after dark 14.6508 12.874 16.4276