condition mean min max ZT0-3 3693.6 3693.6 3693.6 ZT4-7 3022.1 3022.1 3022.1 ZT8-11 3385.55 3385.55 3385.55 ZT12-15 4077.7 4077.7 4077.7 ZT16-19 4204.049999999999 4204.049999999999 4204.049999999999 ZT20-23 4270.9 4270.9 4270.9