condition mean min max 4 h after light 9.063490999999999 8.213932 9.91305 8 h after light 10.1699625 10.141265 10.19866 12 h after light 10.081134 9.895424 10.266844 4 h after dark 10.428755500000001 10.141265 10.716246 8 h after dark 10.230371 10.122785 10.337957 12 h after dark 9.414129 9.414129 9.414129