The most common specific ad sizes were medium rectangles (300 x 250 in dimension) at 18.6 percent, leaderboards (728 x 90) at 18.3 percent, and buttons (120 x 90) at 14.7 percent.

最常见的具体广告尺寸为中等矩形（尺寸300x250），占18.6%，横幅广告（728x90），占18.3%，纽扣广告（120x90）占14.7%。

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The most common specific ad sizes were medium rectangles (300 x 250 in dimension) at 18.6 percent, leaderboards (728 x 90) at 18.3 percent, and buttons (120 x 90) at 14.7 percent.

最常见的具体广告尺寸为中等矩形（尺寸300x250），占18.6%，横幅广告（728x90），占18.3%，纽扣广告（120x90）占14.7%。

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