Multiple Depth DB Tables Indexing on the Sphere

Table 3

Parameters for the HTM and HEALPix pixelization used in the tests.

𝑑 / 𝑘	𝑁pix	<Area>	Rows/Pix.	Bytes∗
		(arcmin2)
HTM
6	32,768	1.26^†	89,290	2
8	524,288	283	5,580	3
10	8,388,608	18	348	3
12	134,217,728	1	21	4
HEALPix
6	49,152	0.84^†	59,526	2
8	786,432	189	3,720	3
10	12,582,912	12	232	3
12	201,326,592	0.7	14	4

†(deg2); ∗additional disk storage per row needed.