11.01.30 1N2D single rating: 36.8%; peak rating: 42.7% during the preview of ‘Mt. Seoraksan hiking’
11.01.30 Nielsen ratings: #2 Happy Sunday 25.5 (Seoul 26.8)
11.01.30 TNS ratings: #2 Happy Sunday 23.4 (Seoul 27.9), #16 1n2d rerun 9.6 (Seoul 10.8)
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