condition mean min max ZT0-3 0.06504531675 0.0 0.1300906335 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0911663725 0.0 0.182332745 ZT16-19 0.14104596866666666 0.0 0.2820919373333333 ZT20-23 0.0 0.0 0.0