condition mean min max ZT0-3 117.655153 117.655153 117.655153 ZT4-7 323.275248 323.275248 323.275248 ZT8-11 433.2272245 433.2272245 433.2272245 ZT12-15 373.578155 373.578155 373.578155 ZT16-19 157.4547855 157.4547855 157.4547855 ZT20-23 38.7559035 38.7559035 38.7559035