condition mean min max ZT0-3 0.8429428943333334 0.3092785 1.570446 ZT4-7 0.0649691073355 0.0649691073355 0.0649691073355 ZT8-11 1.8588900000000002 1.8588900000000002 1.8588900000000002 ZT12-15 1.0578301017125 2.03425e-07 2.11566 ZT16-19 1.91105 1.91105 1.91105 ZT20-23 0.3297926815 0.3297926815 0.3297926815