condition mean min max ZT0-3 0.02826165 0.02826165 0.02826165 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.187449 0.187449 0.187449 ZT16-19 1.7142249999999999 1.7142249999999999 1.7142249999999999 ZT20-23 0.743463 0.743463 0.743463