Financial report context:
issuer purchases of equity securities during the three months ended december 31 , 2010 , we repurchased 1460682 shares of our common stock for an aggregate of $ 74.6 million , including commissions and fees , pursuant to our publicly announced stock repurchase program , as follows : period total number of shares purchased ( 1 ) average price paid per share total number of shares purchased as part of publicly announced plans or programs approximate dollar value of shares that may yet be purchased under the plans or programs ( in millions ) .

Financial table:
period: october 2010; total number of shares purchased ( 1 ): 722890; average price paid per share: $ 50.76; total number of shares purchased as part of publicly announced plans or programs: 722890; approximate dollar value of shares that may yet be purchasedunder the plans or programs ( in millions ): $ 369.1
period: november 2010; total number of shares purchased ( 1 ): 400692; average price paid per share: $ 51.81; total number of shares purchased as part of publicly announced plans or programs: 400692; approximate dollar value of shares that may yet be purchasedunder the plans or programs ( in millions ): $ 348.3
period: december 2010; total number of shares purchased ( 1 ): 337100; average price paid per share: $ 50.89; total number of shares purchased as part of publicly announced plans or programs: 337100; approximate dollar value of shares that may yet be purchasedunder the plans or programs ( in millions ): $ 331.1
period: total fourth quarter; total number of shares purchased ( 1 ): 1460682; average price paid per share: $ 51.08; total number of shares purchased as part of publicly announced plans or programs: 1460682; approximate dollar value of shares that may yet be purchasedunder the plans or programs ( in millions ): $ 331.1

Additional report context:
( 1 ) repurchases made pursuant to the $ 1.5 billion stock repurchase program approved by our board of directors in february 2008 ( the 201cbuyback 201d ) . under this program , our management is authorized to purchase shares from time to time through open market purchases or privately negotiated transactions at prevailing prices as permitted by securities laws and other legal requirements , and subject to market conditions and other factors . to facilitate repurchases , we make purchases pursuant to trading plans under rule 10b5-1 of the exchange act , which allows us to repurchase shares during periods when we otherwise might be prevented from doing so under insider trading laws or because of self-imposed trading blackout periods . this program may be discontinued at any time . subsequent to december 31 , 2010 , we repurchased 1122481 shares of our common stock for an aggregate of $ 58.0 million , including commissions and fees , pursuant to the buyback . as of february 11 , 2011 , we had repurchased a total of 30.9 million shares of our common stock for an aggregate of $ 1.2 billion , including commissions and fees pursuant to the buyback . we expect to continue to manage the pacing of the remaining $ 273.1 million under the buyback in response to general market conditions and other relevant factors. .

Question: what portion of total shares repurchased in the fourth quarter of 2010 occurred during december?
Answer: 23.1%