. 2011 Aug 16;6(8):e23176. doi: 10.1371/journal.pone.0023176

Table 2. Contact matrices between classes.

	1^st A	1^st B	2^nd A	2^nd B	3^rd A	3^rd B	4^th A	4^th B	5^th A	5^th B	teachers
1^st A	4505	1051	594	625	560	286	83	160	57	105	149
1^st B	1051	9756	502	632	269	207	551	161	448	386	1084
2^nd A	594	502	5401	1583	657	360	77	56	76	30	586
2^nd B	625	632	1583	6270	712	373	119	36	41	54	508
3^rd A	560	269	657	712	5537	2076	77	163	109	82	414
3^rd B	286	207	360	373	2076	5926	248	193	154	219	282
4^th A	83	551	77	119	77	248	4496	828	351	745	382
4^th B	160	161	56	36	163	193	828	2843	119	346	168
5^th A	57	448	76	41	109	154	351	119	4913	1968	372
5^th B	105	386	30	54	82	219	745	119	1968	5025	273
teachers	149	1084	586	508	414	282	382	168	372	273	101

The matrix entry for row A and column B gives the total number of contacts Inline graphic measured between all individuals of classes A and B over the two days of data collection.