condition mean min max ZT0-3 10.0443 10.0443 10.0443 ZT4-7 7.325375 7.325375 7.325375 ZT8-11 6.972955000000001 6.972955000000001 6.972955000000001 ZT12-15 8.61403 8.61403 8.61403 ZT16-19 10.098085 10.098085 10.098085 ZT20-23 11.256599999999999 11.256599999999999 11.256599999999999