condition mean min max ZT0-3 0.4322475 0.4322475 0.4322475 ZT4-7 0.6300285 0.6300285 0.6300285 ZT8-11 0.6396660000000001 0.6396660000000001 0.6396660000000001 ZT12-15 0.964378 0.964378 0.964378 ZT16-19 0.614664 0.614664 0.614664 ZT20-23 0.43491599999999997 0.43491599999999997 0.43491599999999997