condition mean min max ZT0-3 1.3133485 0.497822 2.128875 ZT4-7 1.007217 1.007217 1.007217 ZT8-11 1.8216299999999999 1.8216299999999999 1.8216299999999999 ZT12-15 0 0 0 ZT16-19 0.81664 0.81664 0.81664 ZT20-23 1.3092445 1.3092445 1.3092445