Sentence:  In the relatively short time since these early observations , Venus has been observed at additional wave lengths in the range from 0.8 to 10.2 cm , and Jupiter has been observed over the wave-length range from 3.03 to 68 <WSD>cm</WSD> . 
Meaning of the word marked with <WSD> tags:  a metric unit of length equal to one hundredth of a meter