The term specific gravity, symbolized sp gr, refers to the ratio of the density of a solid or liquid to the density of water at 4 degrees Celsius. The term can also refer to the ratio of the density of a gas to the density of dry air at standard temperature and pressure, although this specification is less often used.
Households in Columbia, MD have a median annual income of $100,849, which is more than the median annual income in the United States. Look at the chart to see how the median household income in Columbia, MD compares to that in it's parent locations. Dataset: Source:
According to the 2004 Costa Rica National Survey (1) of Income & Expenses which was published in March 2006, the wealthiest Costa Rican families in the top 10% of the population earn c508,000 per month (US$1,000) per member of the family which is almost triple the amount of the next group.his means that with 2.65 members in the family, the average household income of the richest Ticos-the top 10% is c1,350,000 (US$2,659) per month. This second highest income group earns c187,000 (US$368) and with 3.18 members in the family, the average monthly earnings is c596,000 (US$1,174).