condition mean min max ZT0-3 10.90737 10.90737 10.90737 ZT4-7 10.3514205 10.3514205 10.3514205 ZT8-11 9.5246985 9.5246985 9.5246985 ZT12-15 9.1746945 9.1746945 9.1746945 ZT16-19 11.136208 11.136208 11.136208 ZT20-23 10.4465125 10.4465125 10.4465125