condition mean min max ZT0-3 0.56996875 0.3294945 0.810443 ZT4-7 0.4125955 0.4125955 0.4125955 ZT8-11 0.6143425 0.6143425 0.6143425 ZT12-15 0 0 0 ZT16-19 1.78295 1.78295 1.78295 ZT20-23 1.46616 1.46616 1.46616