求翻译：另外，通过对山东、江苏、浙江、河北、河南和宁夏6个省（自治区）的24个监狱进行调查，罪犯人均居住面积占5平方米以上的仅占13.1% 。是什么意思？

In addition, through the Shandong, Jiangsu, Zhejiang, Hebei, Henan and Ningxia six provinces (autonomous regions) to investigate the 24 prisons, criminals per capita living space of more than 5 square meters only accounted for 13.1%.

In addition, through the Shandong, Jiangsu, Zhejiang, Hebei, Henan, and Ningxia 6 24 provinces (autonomous regions) of an investigation into the prison, the offender, the per-capita living space accounted for more than 5 square meters of only 13.1 per cent.

Moreover, through to Shandong, Jiangsu, Zhejiang, Hebei, Henan and Ningxia 6 provinces (autonomous region) 24 jails carry on the investigation, the criminal average per person floor space occupy 5 square meter above only to account for 13.1%.

In addition, by Shandong, Jiangsu, Zhejiang, Hebei, Henan, and 6 provinces of Ningxia (autonomous region) 24 prisons investigated per capita living space of offenders accounted for more than 5 square metres of only 13.1%.

In addition, by Shandong, Jiangsu, Zhejiang, Hebei, Henan, and 6 provinces of Ningxia (autonomous region) 24 prisons investigated per capita living space of offenders accounted for more than 5 square metres of only 13.1%.