Those materials have a specific gravity more than 1. Pure water at 4 C (the maximum density) was chosen as the accepted standard for specific gravity and given the value of 1. Some other standards set pure water at 60 F as sg = 1 so it is more correct to state the base used.
Riverside County Income and Careers. As of 2010-2014, the per capita income of Riverside County is $23,660, which is lower than the state average of $29,906 and is lower than the national average of $28,555. Riverside County median household income is $56,592, which has grown by 31.96% since 2000. The median household income growth rate is higher than the state average rate of 29.47% and is higher than the national average rate of 27.36%.
Yearly median tax in Riverside County. The median property tax in Riverside County, California is $2,618 per year for a home worth the median value of $325,300. Riverside County collects, on average, 0.8% of a property's assessed fair market value as property tax. Riverside County has one of the highest median property taxes in the United States, and is ranked 248th of the 3143 counties in order of median property taxes.