Graphite : aggregate time series by day then get the standard deviation for the N displayed days

Hi

Trying to figure out how to

" aggregate multiple time series by day then get the standard deviation for the N displayed days "

using a graphite query (in grafana)

I am able to group by day and by series and get the Avg using the below query and table visualisation with the “table transform” = “Time Series Aggregation”

summarize(<<multiple_series_wildcard_expression>>, ‘1d’, ‘sum’, false)

yielding

series | Avg

s1 | 1.2
s2 | 4.3
.
sN | 5.1

trying to get similar to the above except “standard deviation” rather than average.

Or is this this even possible in grafana (version v6.6.1) ?

Thanks