Packet Size - Variable (one packet per data set)
| IDN | Description |
| 1 | dataset key (1 designates dataset 1, etc.) |
| 2 | overall thermal displacement parameter, UOV, in A2 |
| 3 | Flack X-absolute configuration parameter (see also lrsfls:) |
| 4 | Rogers absolute configuration parameter (see also lrsfls:) |
| 10 | packed word of GENEV fragment types |
| 11-13 | max |h|, |k|, |l| |
| 14-15 | min and max sin( )/![]() |
| 16 | minimum value of |E1| used for psi(0) calculation |
| 17 | minimum value of |E2| used for psi(0) calculation |
| 18 | maximum number of reflections used in E calculations |
| 30 | relative scale, data set to parent |
| 31 | relative thermal parameter, U, data set to parent |
| 32 | closure error |
| 33 | closure error, anomalous |
| 34 | number of sin(theta)/lambda bins |
| 35 | number of F squared bins |
| 36 | Matthews k value from intercept |
| 37 | slope of Matthews plot |
| 61-69 | hkl transformation matrix used to convert measured hkl to theindices of the unique data set (t11, t21, ....., t33) |
| 71-72 | min and max of h for unique data set |
| 73-74 | min and max of k for unique data set |
| 75-76 | min and max of l for unique data set |
| 77-78 | min and max of for unique data set in degrees |
| 79 | high resolution d (2/sin (max)) |
| 80 | low resolution d (2/sin (min)) |
| 81 | number of reflections used in refinement |
| 82-86 | numbers of reflections with rcodes 1 to 5 used in refinement |
| 87 | threshold factor applied to sigma(Y) to classify rcode2 reflections |
| 88 | coefficient Y used in threshold test (1=F; 2=F2; 3=I) |
| 89 | N(Laue symmetry) (in PAKFRL mode =total number of reflection packets) |
| 90 | N(Crystal class) - N(Laue symmetry) (in PAKFRL mode =total number of reflection packets - rcode 4 reflections - item 89) |
| 91 | _reflns_Friedel_coverage = item 90/ item 89 |
| 101 | extinction type (0=Zach.; 1=iso Becker-Coppens 1; 2=iso B-C 2; 3=isoB-C 1+2; 4=aniso B-C 1; 5=aniso B-C 2; 6= aniso B-C 1+2) |
| 102 | distribution (0=Gaussian; 1=Lorentzian) |
| 103 | isotropic extinction type1 parameter g (see also lrsfls: 34) |
| 104 | isotropic extinction type2 parameter (see also lrsfls: 35) |
| 105-110 | anisotropic extinction type1 parameters |
| 111-116 | anisotropic extinction type2 parameters |
| 117 | mean Tbar (in mm) |
| 200-249 | closure errors for shells (bins) |
| 300-349 | anomalous closure errors for shells |