condition mean min max ZT0-3 0.075312588 0.053057201 0.097567975 ZT4-7 0.029321689333333338 0.016323306 0.042320072666666673 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0