condition mean min max ZT0-3 55.57485 11.600000000000001 128.9235 ZT4-7 52.11965 52.11965 52.11965 ZT8-11 62.4833 62.4833 62.4833 ZT12-15 136.46425 125.61449999999999 147.314 ZT16-19 89.6326 89.6326 89.6326 ZT20-23 57.23655 57.23655 57.23655