Term RMS refers to the mathematical Root Mean Square which is an average of peaks and valleys of a materials surface profile. Ra stands for roughness average. Ra is a average of only peaks; therefore, to get an Ra, multiple your 3.2 to 6.3 by 2 to get 6.4 to 12.4 Ra. AF Kenton.
Closest Airport to Siesta Key, FL. The closest airport is Sarasota Bradenton International Airport (SRQ). Distance from Sarasota Bradenton International Airport to Siesta Key is 10,4 kilometers (6,5 miles).
Siesta Key is a barrier island off the southwestern coast of Florida, United States. It is situated between Roberts Bay and the Gulf of Mexico. A portion of it lies within the city boundary of Sarasota, but the majority of the key is a census-designated place (CDP) in Sarasota County.