The Rank type for Survey field is a bit different from others, as it suggest to user to order some elements and not to select one answer. Consequently, each submission provides n answers, corresponding to available options to order. Thus what maxicharts does is affecting points automatically to each answer. If n options available, maxichart with score all ordered answers from 1 (the last option in ordered list) to n (the first one in the ordered list). What you see below is the total on all user submissions, each submission being processed as described before.
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