condition mean min max ZT0-3 979.6 979.6 979.6 ZT4-7 971.7 971.7 971.7 ZT8-11 711.5999999999999 711.5999999999999 711.5999999999999 ZT12-15 746.4000000000001 746.4000000000001 746.4000000000001 ZT16-19 848.55 848.55 848.55 ZT20-23 994.8 994.8 994.8