condition mean min max ZT0-3 1252.85 1252.85 1252.85 ZT4-7 1272.8 1272.8 1272.8 ZT8-11 1279.9499999999998 1279.9499999999998 1279.9499999999998 ZT12-15 1373.4 1373.4 1373.4 ZT16-19 1667.9 1667.9 1667.9 ZT20-23 1547.25 1547.25 1547.25