--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test-data/mm9.len	Thu Jan 08 14:25:51 2015 -0500
@@ -0,0 +1,36 @@
+chr1	197195432
+chr2	181748087
+chr3	159599783
+chr4	155630120
+chr5	152537259
+chr6	149517037
+chr7	152524553
+chr8	131738871
+chr9	124076172
+chr10	129993255
+chr11	121843856
+chr12	121257530
+chr13	120284312
+chr14	125194864
+chr15	103494974
+chr16	98319150
+chr17	95272651
+chr18	90772031
+chr19	61342430
+chrX	166650296
+chrY	15902555
+chrM	16299
+chr13_random	400311
+chr16_random	3994
+chr17_random	628739
+chr1_random	1231697
+chr3_random	41899
+chr4_random	160594
+chr5_random	357350
+chr7_random	362490
+chr8_random	849593
+chr9_random	449403
+chrUn_random	5900358
+chrX_random	1785075
+chrY_random	58682461
+