condition mean min max ZT0-3 11.018149999999999 11.018149999999999 11.018149999999999 ZT4-7 8.87776 8.87776 8.87776 ZT8-11 12.07065 12.07065 12.07065 ZT12-15 12.63965 12.63965 12.63965 ZT16-19 16.2865 16.2865 16.2865 ZT20-23 11.2418 11.2418 11.2418