condition mean min max ZT0-3 0.24904916666666668 0.0 0.7471475000000001 ZT4-7 0.0 0.0 0.0 ZT8-11 0.292788 0.292788 0.292788 ZT12-15 0.0714565 0.0 0.142913 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0