*Count*:: The {ref}/search-aggregations-metrics-valuecount-aggregation.html[_count_] aggregation returns a raw count of 
the elements in the selected index pattern.
*Average*:: This aggregation returns the {ref}/search-aggregations-metrics-avg-aggregation.html[_average_] of a numeric 
field. Select a field from the drop-down.
*Sum*:: The {ref}/search-aggregations-metrics-sum-aggregation.html[_sum_] aggregation returns the total sum of a numeric 
field. Select a field from the drop-down.
*Min*:: The {ref}/search-aggregations-metrics-min-aggregation.html[_min_] aggregation returns the minimum value of a 
numeric field. Select a field from the drop-down.
*Max*:: The {ref}/search-aggregations-metrics-max-aggregation.html[_max_] aggregation returns the maximum value of a 
numeric field. Select a field from the drop-down.
*Unique Count*:: The {ref}/search-aggregations-metrics-cardinality-aggregation.html[_cardinality_] aggregation returns 
the number of unique values in a field. Select a field from the drop-down.
*Standard Deviation*:: The {ref}/search-aggregations-metrics-extendedstats-aggregation.html[_extended stats_] 
aggregation returns the standard deviation of data in a numeric field. Select a field from the drop-down.
*Percentiles*:: The {ref}/search-aggregations-metrics-percentile-aggregation.html[_percentile_] aggregation divides the 
values in a numeric field into percentile bands that you specify. Select a field from the drop-down, then specify one 
or more ranges in the *Percentiles* fields. Click the *X* to remove a percentile field. Click *+ Add* to add a 
percentile field.
*Percentile Rank*:: The {ref}/search-aggregations-metrics-percentile-rank-aggregation.html[_percentile ranks_] 
aggregation returns the percentile rankings for the values in the numeric field you specify. Select a numeric field 
from the drop-down, then specify one or more percentile rank values in the *Values* fields. Click the *X* to remove a
values field. Click *+Add* to add a values field.

You can add an aggregation by clicking the *+ Add Aggregation* button.