condition mean min max ZT0-3 0.1872875 0.1872875 0.1872875 ZT4-7 0.374374 0.374374 0.374374 ZT8-11 0.083794 0.083794 0.083794 ZT12-15 0.0764125 0.0764125 0.0764125 ZT16-19 0.4435415 0.4435415 0.4435415 ZT20-23 0.26131899999999997 0.26131899999999997 0.26131899999999997