condition mean min max ZT0-3 13.954442499999999 7.910735000000001 19.99815 ZT4-7 39.1368 39.1368 39.1368 ZT8-11 8.77383 8.77383 8.77383 ZT12-15 0 0 0 ZT16-19 5.110255 5.110255 5.110255 ZT20-23 19.784550000000003 19.784550000000003 19.784550000000003