condition mean min max 4 h after light 9.434469 8.952038 9.9169 8 h after light 9.583251 8.789139 10.377363 12 h after light 11.362073 10.885058 11.839088 4 h after dark 13.388129 12.421091 14.355167 8 h after dark 11.669494 11.533945 11.805043 12 h after dark 13.615643 13.615643 13.615643