condition mean min max ZT0-3 198.56428 198.56428 198.56428 ZT4-7 218.40786300000002 218.40786300000002 218.40786300000002 ZT8-11 221.128277 221.128277 221.128277 ZT12-15 205.17030300000002 205.17030300000002 205.17030300000002 ZT16-19 258.357348 258.357348 258.357348 ZT20-23 283.9347235 283.9347235 283.9347235