condition mean min max ZT0-3 384.49668 384.49668 384.49668 ZT4-7 506.88334150000003 506.88334150000003 506.88334150000003 ZT8-11 563.5993825 563.5993825 563.5993825 ZT12-15 552.6774295 552.6774295 552.6774295 ZT16-19 346.263246 346.263246 346.263246 ZT20-23 321.3413465 321.3413465 321.3413465