condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.026767089249999997 0.0 0.053534178499999995 ZT20-23 0.02823778025 0.0 0.0564755605