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Figure 6
(a) Average of the uncertainties σ(Q) on [\Delta S_{2}] over the full Q-range (500 radial bins) as a function of number of images averaged in the time bin centred at 4.5 ps. The uncertainties are estimated from the covariance matrix of the straight-line fit [equation (11)[link]]. The dashed line shows that the magnitude of the uncertainties up to ∼50 averaged images follows the behaviour of counting noise expected for a Gaussian distribution ([\sigma\,\propto\,N^{\,-1/2}]). (b) Number of different P2 values that are sampled as a function of number of azimuthal bins. This parameter is maximized if the number of azimuthal bins is odd.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 25| Part 2| March 2018| Pages 306-315
https://doi.org/10.1107/S1600577517016964
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