condition mean min max ZT0-3 41.119125 41.119125 41.119125 ZT4-7 144.0925345 144.0925345 144.0925345 ZT8-11 93.82019 93.82019 93.82019 ZT12-15 123.3935045 123.3935045 123.3935045 ZT16-19 98.0521955 98.0521955 98.0521955 ZT20-23 63.306199 63.306199 63.306199