Table: pga_championship_results
Columns: player
country
year_s_won
total
to_par
finish

Question: In which years was the to par +6?
SQL: SELECT "year_s_won" FROM pga_championship_results WHERE "to_par" = '+6'

Question: In 1991, what was the lowest total?
SQL: SELECT MIN("total") FROM pga_championship_results WHERE "year_s_won" = '1991'