condition mean min max ZT0-3 1.0530045 0.607589 1.4984199999999999 ZT4-7 1.82278 1.82278 1.82278 ZT8-11 1.2073055000000001 1.2073055000000001 1.2073055000000001 ZT12-15 0 0 0 ZT16-19 2.1926 2.1926 2.1926 ZT20-23 3.31024 3.31024 3.31024