condition mean min max ZT0-3 0.15697785625 0.10158605799999999 0.2123696545 ZT4-7 0.0 0.0 0.0 ZT8-11 0.1041636015 0.0 0.208327203 ZT12-15 0.0 0.0 0.0 ZT16-19 0.08943110433333333 0.0 0.17886220866666666 ZT20-23 0.0 0.0 0.0