condition mean min max ZT0-3 424.65 424.65 424.65 ZT4-7 434.1 434.1 434.1 ZT8-11 379.6 379.6 379.6 ZT12-15 296.75 296.75 296.75 ZT16-19 350.65 350.65 350.65 ZT20-23 465.45 465.45 465.45