Table 2: Low-k FSDP feature positions with corresponding real-space distances and short-range order bond length.

Sample	Feature	k		r=2.5k-1
		(Å-1)	(Å)	(Å)
a-SiO2		1.603	3.92	1.56
Product I
Un	(1)	1.505	4.17	1.66
	(2)	1.904	3.30	1.31
	(3)	2.477	2.54	1.01
900 K	(1)	1.510	4.16	1.66
	(2)	1.851	3.39	1.35
	(3)	2.472	2.54	1.01
Product II
Un	(1)	1.447	4.34	1.73
	(2)	1.921	3.27	1.30
	(3)	2.479	2.53	1.01
1000 K	(1)	1.425	4.41	1.75
	(2)	1.924	3.27	1.30
1300 K	(2)	1.826	3.44	1.37
	(3)	2.426	2.59	1.03
Product III
Un		1.829	3.44	1.37
1000 K		1.749	3.59	1.43
1300 K		1.661	3.78	1.51