Table: br_1979_season
Columns: week
date
opponent
result
game_site
record
attendance

Question: What is the date for week 15?
SQL: SELECT "date" FROM br_1979_season WHERE "week" = 15

Question: What is the total attendance for Candlestick Park?
SQL: SELECT COUNT("attendance") FROM br_1979_season WHERE "game_site" = 'candlestick park'