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Fig. 3. Ratios of mean protein contents R (1999/1950`) for individual foods. Mean R-values and their 95% confidence intervals are shown for two estimates of the uncertainty (SE) of the 1950 means. For the low estimates of the 1950 SEs, the mean R-values are the left tic marks, and the 95% CIs are the wide vertical lines. For the high estimates, the mean R-values are the right tic marks, and the 95% CIs are the narrow vertical lines. Median R-values (not shown) are less than or usually about equal to the left tic marks, and do not depend appreciably on the SEs. Missing foods have inadequate data for this analysis.
