"herd"	"incidence"	"size"	"period"
"1"	2	14	"1"
"1"	3	12	"2"
"1"	4	9	"3"
"1"	0	5	"4"
"2"	3	22	"1"
"2"	1	18	"2"
"2"	1	21	"3"
"3"	8	22	"1"
"3"	2	16	"2"
"3"	0	16	"3"
"3"	2	20	"4"
"4"	2	10	"1"
"4"	0	10	"2"
"4"	2	9	"3"
"4"	0	6	"4"
"5"	5	18	"1"
"5"	0	25	"2"
"5"	0	24	"3"
"5"	1	4	"4"
"6"	3	17	"1"
"6"	0	17	"2"
"6"	0	18	"3"
"6"	1	20	"4"
"7"	8	16	"1"
"7"	1	10	"2"
"7"	3	9	"3"
"7"	0	5	"4"
"8"	12	34	"1"
"9"	2	9	"1"
"9"	0	6	"2"
"9"	0	8	"3"
"9"	0	6	"4"
"10"	1	22	"1"
"10"	1	22	"2"
"10"	0	18	"3"
"10"	2	22	"4"
"11"	0	25	"1"
"11"	5	27	"2"
"11"	3	22	"3"
"11"	1	22	"4"
"12"	2	10	"1"
"12"	1	8	"2"
"12"	0	6	"3"
"12"	0	5	"4"
"13"	1	21	"1"
"13"	2	24	"2"
"13"	0	19	"3"
"13"	0	23	"4"
"14"	11	19	"1"
"14"	0	2	"2"
"14"	0	3	"3"
"14"	0	2	"4"
"15"	1	19	"1"
"15"	1	15	"2"
"15"	1	15	"3"
"15"	0	15	"4"