Hint gather_plan_statistics

 Hi,

I have a question . I am using the /*+ gather_plan_statistics */ hints on my query . As you can see below . I want to know what is the total elapsed time when we used this hint .

Is it A-TIME on the Top i.e 3.63 or it is total sum of A-TIME  from bottim to Up i.e 3.63+00:00:03.20+00:00:00.86 +00:00:02.41?

PLAN_TABLE_OUTPUT
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SQL_ID  a36w6pfkgp2sy, child number 0
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select /*+ gather_plan_statistics */ avg(x*2) from ( select /* t1_nl_join_agg.sql */
t1.x, t2.y from kso.t1 t1, kso.t2 t2 where t1.y = t2.x )
 
Plan hash value: 174109304
 
----------------------------------------------------------------------------------------------
| Id  | Operation           | Name         | Starts | E-Rows | A-Rows |   A-Time   | Buffers |
----------------------------------------------------------------------------------------------
|   1 |  SORT AGGREGATE     |              |