Table:
text: Chinese Super League
Season averages
Season averages
Season Total_Attendance Games Average High_avg_ Team No_Of_Clubs
2006 2228300 210 10611 30679 Shandong Luneng 15
2007 3173500 210 15112 24643 Shanxi Chanba 15
2008 3065280 228 13444 26501 Shandong Luneng 16
2009 3854115 240 16059 36805 Beijing Guo`an 16
2010 3499304 240 14581 33342 Beijing Guo`an 16
2011 4236322 240 17651 45666 Guangzhou Evergrande 16
2012 4497578 240 18740 37250 Guangzhou Evergrande 16
2013 4456977 240 18571 40428 Guangzhou Evergrande 16

text: Chinese Super League
Season averages
Season averages
Season Total_Attendance Games Average High_avg_ Team No_Of_Clubs
1994 2155000 132 16326 40000 Sichuan Quanxing 12
1995 3140280 132 23790 40182 Sichuan Quanxing 12
1996 3203122 132 24266 42272 Jinan Taishan 12
1997 2801100 132 21220 39180 Sichuan Quanxing 12
1998 3883000 182 21335 39713 Shanghai Shenhua 14
1999 3623500 182 19909 33538 Shandong Luneng 14
2000 3622000 182 19901 35615 Shenyang Ginde 14
2001 3329872 182 18296 38700 Shanxi Guoli 14
2002 3146640 210 14984 32429 Beijing Guo`an 15
2003 3719700 210 17710 30500 Dalian Shide 15
2004 1430600 132 10838 23636 Shandong Luneng 12
2005 1871700 182 10284 26000 Shandong Luneng 14

Question: What is the smallest average for Beijing Guo'an season averages in Chinese Super League if they have played more than 240 games?