Table: t_49ers_1983_season
Columns: week
date
opponent
result
attendance

Question: What is the lowest attendance for week 11?
SQL: SELECT MIN("attendance") FROM t_49ers_1983_season WHERE "week" = 11

Question: What is the total number of spectators on week 4?
SQL: SELECT COUNT("attendance") FROM t_49ers_1983_season WHERE "week" = 4