Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_68713 ( "Rank" real, "Station" text, "City" text, "State" text, "Boardings and deboardings" real )

### Question ###
In California what was the total rank at Irvine station when the number of boarding and deboardings was less than 683,626?

### Accurate SQL ###

SELECT SUM("Rank") FROM table_68713 WHERE "Boardings and deboardings" < '683,626' AND "State" = 'california' AND "Station" = 'irvine station'