Table 2.

The Euclidean distances between the average feature vectors in the feature space for the Detector X (coated with Cr, Au, Parylene C, and Cytonix). The average of all Euclidean distances in this table is 12.45.

	a: ✕	b: ◯	c: ◊	d: □	e: ▽	f: ✚	g: ✴
a: ✕	0.00	8.78	11.00	25.33	10.12	22.09	28.92
b: ◯	8.78	0.00	10.82	23.25	4.23	21.42	28.64
c: ◊	11.00	10.82	0.00	14.33	1.38	11.35	18.45
d: □	25.33	23.25	14.33	0.00	15.26	4.53	7.12
e: ▽	10.12	4.23	1.38	15.26	0.00	12.00	18.96
f: ✚	22.09	21.42	11.35	4.53	12.00	0.00	7.22
g: ✴	28.92	28.64	18.45	7.12	18.96	7.22	0.00