condition mean min max ZT0-3 0.06700848333333334 0.03150995 0.13637435 ZT4-7 0.0899805 0.0899805 0.0899805 ZT8-11 0.12182559999999999 0.12182559999999999 0.12182559999999999 ZT12-15 0.37981849999999995 0.093822 0.6658149999999999 ZT16-19 0.0851145 0.0851145 0.0851145 ZT20-23 0.0 0.0 0.0