condition mean min max ZT0-3 126.196192 126.196192 126.196192 ZT4-7 131.05429650000002 131.05429650000002 131.05429650000002 ZT8-11 131.491305 131.491305 131.491305 ZT12-15 129.969376 129.969376 129.969376 ZT16-19 187.040889 187.040889 187.040889 ZT20-23 182.374812 182.374812 182.374812