condition mean min max ZT0-3 97.297084 97.297084 97.297084 ZT4-7 127.302644 127.302644 127.302644 ZT8-11 157.210107 157.210107 157.210107 ZT12-15 174.4981055 174.4981055 174.4981055 ZT16-19 149.3921155 149.3921155 149.3921155 ZT20-23 142.979748 142.979748 142.979748