condition mean min max ZT0-3 205.317 205.317 205.317 ZT4-7 150.1585 150.1585 150.1585 ZT8-11 134.9725 134.9725 134.9725 ZT12-15 160.5395 160.5395 160.5395 ZT16-19 199.816 199.816 199.816 ZT20-23 214.167 214.167 214.167