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_204_206 ( id number, "saros" number, "member" number, "date" text, "time\n(greatest)\nutc" text, "type" text, "location\nlat,long" text, "gamma" number, "mag." number, "width\n(km)" number, "duration\n(min:sec)" text, "ref" number )

### Question ###
what is the difference in magnitude between the may 13 , 2181 solar saros and the may 24 , 2199 solar saros ?

### Accurate SQL ###

SELECT ABS((SELECT "mag." FROM table_204_206 WHERE "date" = 'may 13, 2181') - (SELECT "mag." FROM table_204_206 WHERE "date" = 'may 24, 2199'))