condition mean min max ZT0-3 0.95744625 0.6179025 1.29699 ZT4-7 0.9615615 0.9615615 0.9615615 ZT8-11 1.045699 1.045699 1.045699 ZT12-15 0 0 0 ZT16-19 1.4009800000000001 1.4009800000000001 1.4009800000000001 ZT20-23 1.73648 1.73648 1.73648