condition mean min max ZT0-3 399.85 399.85 399.85 ZT4-7 2099.9 2099.9 2099.9 ZT8-11 1900.3999999999999 1900.3999999999999 1900.3999999999999 ZT12-15 1135.8 1135.8 1135.8 ZT16-19 391.09999999999997 391.09999999999997 391.09999999999997 ZT20-23 43.15 43.15 43.15