Table 4. Real-space radius of gyration (R g) estimates calculated with GNOM from measurements with 100 ms exposure time taken with the MMPAD and the CCD.
σRg is the standard deviation of five measurements of the radius of gyration and σGNOM is the mean of the uncertainty returned by GNOM for the five separate measurements. The last column reports the average of the GNOM TOTAL estimate metric (TOTAL) which is a weighted estimate of the criteria that evaluate the quality of the pair-distribution solution found. DISCRP was given zero weight since profile standard deviations were not provided to GNOM as input. A value of 1 is an ideal solution and 0 is unacceptable.
| Rg (Å) | σRg (Å) | σGNOM (Å) | GNOM TOTAL estimate | ||
|---|---|---|---|---|---|
| MMPAD | 11× att. | 14.37 | 0.59 | 0.14 | 0.96 |
| CCD (full-chip) | 11× att. | 14.26 | 0.34 | 0.16 | 0.81 |
| CCD (cut) | 11× att. | 14.16 | 1.15 | 0.23 | 0.87 |
| MMPAD | No att. | 14.50 | 0.25 | 0.05 | 0.94 |
| CCD (full-chip) | No att. | 14.35 | 0.11 | 0.03 | 0.97 |
| CCD (cut) | No att. | 14.36 | 0.10 | 0.05 | 0.98 |