Table 14.— RELATIVE HUMIDITY, PERCENT— Continued 



[Pressure = 30.0 inches] 



Table 15. FOREL WATER COLOR SCALE CODE 



Code Description 



00 Deep blue. 



10 Blue. 



20 Greenish-blue (or green blue). 



30 Bluish-green (or blue green). 



40 Green 



50 Light green 



60 Yellowish-green 



70 Yellow green. 



80 Green yellow. 



90 Greenish-yellow. 



99 Yellow. 



H. O. 607 



201 



