condition mean min max ZT0-3 434.235 434.235 434.235 ZT4-7 368.20050000000003 368.20050000000003 368.20050000000003 ZT8-11 331.7795 331.7795 331.7795 ZT12-15 327.632 327.632 327.632 ZT16-19 440.01599999999996 440.01599999999996 440.01599999999996 ZT20-23 494.0615 494.0615 494.0615