condition mean min max ZT0-3 0.0252205 0.0252205 0.0252205 ZT4-7 0.0348293 0.0348293 0.0348293 ZT8-11 0.0 0.0 0.0 ZT12-15 0.03473295 0.03473295 0.03473295 ZT16-19 0.0615945 0.0615945 0.0615945 ZT20-23 0.09101234999999999 0.09101234999999999 0.09101234999999999