condition mean min max ZT0-3 41.309125 27.786 54.83225 ZT4-7 111.8358 111.8358 111.8358 ZT8-11 161.81 161.81 161.81 ZT12-15 0 0 0 ZT16-19 93.8522 93.8522 93.8522 ZT20-23 156.08249999999998 156.08249999999998 156.08249999999998