condition mean min max 4 h after light 8.259766500000001 7.897202 8.622331 8 h after light 8.9838065 8.628567 9.339046 12 h after light 9.779165500000001 9.469874 10.088457 4 h after dark 8.6832305 7.459702 9.906759 8 h after dark 9.197719 8.628567 9.766871 12 h after dark 8.732799 8.732799 8.732799