condition mean min max ZT0-3 299.616672 299.616672 299.616672 ZT4-7 405.8531935 405.8531935 405.8531935 ZT8-11 404.0198265 404.0198265 404.0198265 ZT12-15 320.2127355 320.2127355 320.2127355 ZT16-19 355.9649245 355.9649245 355.9649245 ZT20-23 374.3354935 374.3354935 374.3354935