For all games with calgary as home, what the average number of attendees one?
Date Visitor Score Home Decision Attendance Record
2005–06 Columbus Blue Jackets season
13242342
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2-13242342-7
February
February
February 1 Columbus 2 – 1 Calgary Denis 19,289 21–30–2
February 2 Columbus 2 – 1 Edmonton Denis 16,839 22–30–2
February 6 Columbus 4 – 7 Vancouver Denis 18,630 22–31–2
February 8 Los Angeles 4 – 7 Columbus Denis 16,162 23–31–2
February 10 Colorado 4 – 1 Columbus Denis 18,136 23–32–2
February 11 Columbus 2 – 5 Nashville Denis 17,113 23–33–2
SELECT AVG Attendance FROM table WHERE Home = calgary
calgary