condition mean min max ZT0-3 339.0 339.0 339.0 ZT4-7 429.1 429.1 429.1 ZT8-11 387.25 387.25 387.25 ZT12-15 448.29999999999995 448.29999999999995 448.29999999999995 ZT16-19 386.25 386.25 386.25 ZT20-23 374.15 374.15 374.15