condition mean min max ZT0-3 4.84858 4.84858 4.84858 ZT4-7 1.611405 1.611405 1.611405 ZT8-11 3.054085 3.054085 3.054085 ZT12-15 0.0 0.0 0.0 ZT16-19 5.59482 5.59482 5.59482 ZT20-23 3.4674300000000002 3.4674300000000002 3.4674300000000002