condition mean min max ZT0-3 2569.7 2569.7 2569.7 ZT4-7 2199.7 2199.7 2199.7 ZT8-11 1892.55 1892.55 1892.55 ZT12-15 2015.55 2015.55 2015.55 ZT16-19 2389.8 2389.8 2389.8 ZT20-23 2466.9 2466.9 2466.9