condition mean min max ZT0-3 146.45299999999997 146.45299999999997 146.45299999999997 ZT4-7 147.26850000000002 147.26850000000002 147.26850000000002 ZT8-11 136.1705 136.1705 136.1705 ZT12-15 133.895 133.895 133.895 ZT16-19 143.613 143.613 143.613 ZT20-23 143.192 143.192 143.192