condition mean min max ZT0-3 0.8215192499999999 0.8011415 0.841897 ZT4-7 0.530435 0.530435 0.530435 ZT8-11 1.797605 1.797605 1.797605 ZT12-15 0 0 0 ZT16-19 2.068535 2.068535 2.068535 ZT20-23 0.9104025 0.9104025 0.9104025