condition mean min max ZT0-3 384.11178047499993 317.82859705 450.39496389999994 ZT4-7 216.50813945 213.82655745 219.18972145 ZT8-11 125.8050386025 98.23453484000001 153.375542365 ZT12-15 38.41679050250001 35.467875085 41.36570592 ZT16-19 68.5932508425 62.993840885 74.1926608 ZT20-23 58.5513361025 51.397952015 65.70472019