SPATIAL COVERAGE OF TYPE “cartographic works” IN THE ADL CATALOG

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There are 324,876 items of type “cartographic works” in the ADL Catalog as of March 5, 2000.

The spatial coverage of the items is graphically shown by the tiled map below. Each tile represents a 10° × 10° area of the Earth's surface. The color of a tile reflects the number of items that overlap that tile; the lighter the color, the more items that overlap. The legend to the right of the map shows the correspondence between color and number of items.

The following table shows the spatial coverage numerically. Each cell in the table represents a 20° × 20° area of the Earth's surface centered at the indicated latitude and longitude. The value in a cell is the number of items that overlap that cell.

		Longitude
		-170	-150	-130	-110	-90	-70	-50	-30	-10	10	30	50	70	90	110	130	150	170
Latitude	80	171	569	306	632	707	413	117	108	96	165	327	163	162	226	190	131	145	113
	60	2156	6638	6700	6889	3716	3706	753	135	1675	11624	5797	1099	551	525	627	746	544	495
	40	137	137	18645	72977	78732	40451	946	102	2415	8775	4051	1737	1297	469	694	4974	2951	128
	20	197	912	111	2315	10495	1503	98	81	931	1679	1067	849	1514	2073	1313	1236	169	95
	0	84	69	55	55	506	1160	1157	281	400	1424	2220	411	189	273	947	592	287	120
	-20	121	85	64	62	79	666	1794	201	63	237	2102	215	74	75	563	2154	1424	174
	-40	95	65	54	55	65	1134	789	58	60	131	214	53	61	55	242	608	895	998
	-60	83	70	57	63	59	216	95	58	50	51	51	49	63	60	59	58	87	90
	-80	53	75	73	62	55	58	62	39	37	38	39	38	42	37	35	47	82	108