summarystats
Name
summarystats — A composite type returned by the ST_SummaryStats and ST_SummaryStatsAgg functions.
Description
A composite type returned by the ST_SummaryStats and ST_SummaryStatsAgg functions.
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countinteger - 
     
Number of pixels counted for the summary statistics.
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sumdouble precision - 
     
Sum of all counted pixel values.
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meandouble precision - 
     
Arithmetic mean of all counted pixel values.
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stddevdouble precision - 
     
Standard deviation of all counted pixel values.
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mindouble precision - 
     
Minimum value of counted pixel values.
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maxdouble precision - 
     
Maximum value of counted pixel values.