condition mean min max ZT0-3 0.011846766666666666 0.0 0.0355403 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0356172 0.0356172 0.0356172 ZT12-15 0.092160925 0.0742881 0.11003375 ZT16-19 0.10233890000000001 0.10233890000000001 0.10233890000000001 ZT20-23 0.0751025 0.0751025 0.0751025