condition mean min max ZT0-3 1074.0482499999998 967.8515 1180.245 ZT4-7 909.1955 909.1955 909.1955 ZT8-11 278.8165 278.8165 278.8165 ZT12-15 0 0 0 ZT16-19 273.847 273.847 273.847 ZT20-23 659.0889999999999 659.0889999999999 659.0889999999999