T’)] , FRACTION OF LIGHT PASSED 
Te/ (eli 
r 
04 
C=-0.585 In [I/(Ip-1)] 
OF2 
0.02 
0 0.4 0.8 lee 1.6 220 24 
C, CONCENTRATION (gf™') 
Figure 4. Calibration curve for sediment diameter: 
0.417 millimeter < D < 0.495 millimeter, 
Vg = 0.035 foot per second. 
22 
