condition mean min max ZT0-3 0.0083128 0.0 0.0166256 ZT4-7 0.4027275 0.4027275 0.4027275 ZT8-11 0.0996417 0.0996417 0.0996417 ZT12-15 0 0 0 ZT16-19 0.01639295 0.01639295 0.01639295 ZT20-23 0.0822847 0.0822847 0.0822847