JEP is right. This part of the METAR is transmitted in Russia and most of the former USSR countries even during summer, or to be precise it's reported even if there is no runway contamination observed.
11 indicates the runway CLRD stands for cleared or indicates that contamination ceased to exist and the digits indicate the measured friction coefficient, in this case 0,70 which equals good, even in Russia, as they use a slightly different pairing of friction coefficient vs. braking action.