condition mean min max ZT0-3 12381.948333333334 8228.795 16570.6 ZT4-7 13696.1 13696.1 13696.1 ZT8-11 12758.529999999999 12758.529999999999 12758.529999999999 ZT12-15 16145.725 12978.3 19313.15 ZT16-19 15798.4 15798.4 15798.4 ZT20-23 15818.849999999999 15818.849999999999 15818.849999999999