Hi everyone, When I scale the data using Scala, I don't know differences between _diffrn_reflns.meanI_over_sigI_all 6.5475 _diffrn_reflns.meanI_over_sd_all 21.3013 in the statistics. I think that both "sigma" and "sd" have the same meaning--"standard deviation". By the way, in the file header of PDB's, what are the meanings of the numbers 5 and 1 in the row "HELIX", numbers 0, 1 and -1 in the row "SHEET". And in the row "SHEET", what's the meaning of the last 6 columns. HELIX 1 1 THR A 35 ASP A 37 5 3 HELIX 2 2 SER A 41 TYR A 46 1 6 HELIX 3 3 GLU A 68 ALA A 82 1 15 SHEET 1 C 6 GLU A 224 ARG A 232 0 SHEET 2 C 6 ILE A 214 GLU A 221 -1 N CYS A 217 O ARG A 229 SHEET 3 C 6 PHE A 183 VAL A 189 -1 N PHE A 187 O LEU A 218 SHEET 4 C 6 VAL A 302 LEU A 309 -1 O ILE A 306 N LYS A 184 SHEET 5 C 6 LYS A 254 HIS A 261 -1 N ILE A 258 O GLY A 305 SHEET 6 C 6 GLU A 280 PRO A 288 1 O ASP A 283 N VAL A 257
Thanks Lu Yongzhi