condition mean min max ZT0-3 0.01769747125 0.0 0.0353949425 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.058343235333333326 0.021764071 0.09492239966666666 ZT16-19 0.0218804745 0.014675739 0.02908521 ZT20-23 0.0 0.0 0.0