condition mean min max ZT0-3 478.75 478.75 478.75 ZT4-7 702.2 702.2 702.2 ZT8-11 833.5 833.5 833.5 ZT12-15 1436.65 1436.65 1436.65 ZT16-19 1218.1 1218.1 1218.1 ZT20-23 697.2 697.2 697.2