condition mean min max ZT0-3 135.1725 131.1635 139.1815 ZT4-7 64.05645 64.05645 64.05645 ZT8-11 71.9006 71.9006 71.9006 ZT12-15 0 0 0 ZT16-19 159.9035 159.9035 159.9035 ZT20-23 123.6255 123.6255 123.6255