condition mean min max ZT0-3 0.023771533333333334 0.0 0.0361091 ZT4-7 0.142832 0.142832 0.142832 ZT8-11 0.0 0.0 0.0 ZT12-15 0.01966835 0.0 0.0393367 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0