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Actually I am not sure I understand them fully. The trends - busiest times, days of the week etc are obvious - but I am struggling with the total - shown in red, then the unique in green and returning in blue. Does unique mean that each of those ppl visited only once on that day - or that they had never visited before (ie were new entirely to the MA campus). Similarly does returning refer to ppl who revisit MA twice or more on the same day or who have visited on previous occasions. And where does the total come from? Because if you add the unique and the returning together you do not come up with the same number as the total. There is a large shortfall between the number obtained by adding together the unique and the returning and the number in total. What category of visitor are these?