condition mean min max ZT0-3 373.32392 373.32392 373.32392 ZT4-7 223.02346649999998 223.02346649999998 223.02346649999998 ZT8-11 230.8997115 230.8997115 230.8997115 ZT12-15 289.9132885 289.9132885 289.9132885 ZT16-19 371.1698255 371.1698255 371.1698255 ZT20-23 285.17944550000004 285.17944550000004 285.17944550000004