Figure 3
Differences between global estimates of
and GR’s prediction as a function of minimum source elevation angle,
(open triangles), and minimum solar elongation angle,
, for positive declination sources (black shaded circles) and negative declination sources (open circles). These deviations from GR are plotted as a function of the smallest source elevation or solar elongation angle contained in each subset of data. For example, the open circle plotted with an abscissa of
represents the deviation in
from GR’s prediction determined from negative declination sources with
, i.e., the difference from zero in the value of this plotted point is determined solely by data with solar elongation angles between
and
. “Ref.” refers to
for our reference solution (
and
), for which there are no cutoffs. Error bars represent the statistical standard error scaled by 1.7, the ratio of the standard error that we estimated for the mean of our daily estimates of
, and the statistical standard error from our (complete) global solution (see text).
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