condition mean min max ZT0-3 276.79999999999995 276.79999999999995 276.79999999999995 ZT4-7 364.6 364.6 364.6 ZT8-11 409.15 409.15 409.15 ZT12-15 393.8 393.8 393.8 ZT16-19 389.3 389.3 389.3 ZT20-23 330.95 330.95 330.95