Table 4.

Parallel between loss of optical power and visual acuity for different amounts of fog in a layer of fog of 30 cm and observation of the table from 3 m.

Measurement Distance	Visual Acuity	Optical Power [uW]	Liquid Quantity [g]	Fog Density [g/m${}^3$]
3 m Fog layer thickness = 30 cm	0	57	2	11.11
	1	120	1.75	9.72
	2	140	1.5	8.34
	3	220	1.25	6.95
	4	280	1	5.56
	5	340	0.75	4.17
	6	550	0.5	2.78
	7	950	0.25	1.39