condition mean min max ZT0-3 1313.25 1313.25 1313.25 ZT4-7 1713.6 1713.6 1713.6 ZT8-11 1495.3 1495.3 1495.3 ZT12-15 1229.95 1229.95 1229.95 ZT16-19 1131.9 1131.9 1131.9 ZT20-23 1061.15 1061.15 1061.15