condition mean min max ZT0-3 0.8855822499999999 0.4471845 1.32398 ZT4-7 1.270205 1.270205 1.270205 ZT8-11 2.25073 2.25073 2.25073 ZT12-15 0 0 0 ZT16-19 4.50877 4.50877 4.50877 ZT20-23 3.202165 3.202165 3.202165