I have a dataframe 'input_df' with following column names.
sensor,X,Y,Zone,Log Year,Sw Ave_log,Sw Ave,Sw Ave_lower,Sw Ave_upper

built a dataframe which group the dataframe based on columns 'sensor,X,Y,Zone,Log Year' and calculate average of the columns 'Sw Ave', 'Sw Ave_lower','Sw Ave_upper'.  Avoid using the following keywords: group, log, average, ave_lower','sw
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