condition mean min max ZT0-3 367.4 367.4 367.4 ZT4-7 354.1 354.1 354.1 ZT8-11 310.1 310.1 310.1 ZT12-15 313.29999999999995 313.29999999999995 313.29999999999995 ZT16-19 342.79999999999995 342.79999999999995 342.79999999999995 ZT20-23 373.1 373.1 373.1