condition mean min max ZT0-3 106.3171 81.70615000000001 140.023 ZT4-7 167.5255 167.5255 167.5255 ZT8-11 161.797 161.797 161.797 ZT12-15 195.4645 190.9595 199.9695 ZT16-19 178.2375 178.2375 178.2375 ZT20-23 110.148 110.148 110.148