Sentence:  In the lower center rack an 8 - channel recorder <WSD>indicates</WSD> the percentage of carbon dioxide and nitrogen from the upper and lower lobes of one lung , the total volume of inhalation per breath , the flow of air from both lobes , and the pressure of the two lobes with respect to each other . 
Meaning of the word marked with <WSD> tags:  indicate a place, direction, person, or thing; either spatially or figuratively