condition mean min max ZT0-3 126.001288 126.001288 126.001288 ZT4-7 116.72933649999999 116.72933649999999 116.72933649999999 ZT8-11 119.2649585 119.2649585 119.2649585 ZT12-15 128.6152985 128.6152985 128.6152985 ZT16-19 106.3620595 106.3620595 106.3620595 ZT20-23 122.504638 122.504638 122.504638