condition mean min max ZT0-3 25.5619 25.5619 25.5619 ZT4-7 17.72185 17.72185 17.72185 ZT8-11 9.275970000000001 9.275970000000001 9.275970000000001 ZT12-15 17.25975 17.25975 17.25975 ZT16-19 55.93925 55.93925 55.93925 ZT20-23 34.45815 34.45815 34.45815