condition mean min max ZT0-3 5.22195 4.66087 5.78303 ZT4-7 14.88053 14.88053 14.88053 ZT8-11 5.301425 5.301425 5.301425 ZT12-15 0 0 0 ZT16-19 1.497482 1.497482 1.497482 ZT20-23 4.34537 4.34537 4.34537