--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test-data/combined.o.coverage	Sat Apr 28 15:07:26 2018 -0400
@@ -0,0 +1,233 @@
+chr15	95484290	95485433	Dbx2	29	170
+chr15	95484290	95484390	Dbx2_window1	1	3
+chr15	95484315	95484415	Dbx2_window2	1	4
+chr15	95484340	95484440	Dbx2_window3	1	4
+chr15	95484365	95484465	Dbx2_window4	0	5
+chr15	95484390	95484490	Dbx2_window5	0	4
+chr15	95484415	95484515	Dbx2_window6	0	6
+chr15	95484440	95484540	Dbx2_window7	0	9
+chr15	95484465	95484565	Dbx2_window8	1	10
+chr15	95484490	95484590	Dbx2_window9	1	10
+chr15	95484515	95484615	Dbx2_window10	1	14
+chr15	95484540	95484640	Dbx2_window11	1	14
+chr15	95484565	95484665	Dbx2_window12	1	16
+chr15	95484590	95484690	Dbx2_window13	1	18
+chr15	95484615	95484715	Dbx2_window14	1	21
+chr15	95484640	95484740	Dbx2_window15	0	24
+chr15	95484665	95484765	Dbx2_window16	0	26
+chr15	95484690	95484790	Dbx2_window17	1	29
+chr15	95484715	95484815	Dbx2_window18	2	31
+chr15	95484740	95484840	Dbx2_window19	2	36
+chr15	95484765	95484865	Dbx2_window20	2	36
+chr15	95484790	95484890	Dbx2_window21	2	35
+chr15	95484815	95484915	Dbx2_window22	4	42
+chr15	95484840	95484940	Dbx2_window23	7	43
+chr15	95484865	95484965	Dbx2_window24	11	46
+chr15	95484890	95484990	Dbx2_window25	13	43
+chr15	95484915	95485015	Dbx2_window26	15	40
+chr15	95484940	95485040	Dbx2_window27	17	48
+chr15	95484965	95485065	Dbx2_window28	17	40
+chr15	95484990	95485090	Dbx2_window29	15	39
+chr15	95485015	95485115	Dbx2_window30	12	41
+chr15	95485040	95485140	Dbx2_window31	5	35
+chr15	95485065	95485165	Dbx2_window32	3	28
+chr15	95485090	95485190	Dbx2_window33	3	31
+chr15	95485115	95485215	Dbx2_window34	4	33
+chr15	95485140	95485240	Dbx2_window35	3	31
+chr15	95485165	95485265	Dbx2_window36	3	34
+chr15	95485190	95485290	Dbx2_window37	6	35
+chr15	95485215	95485315	Dbx2_window38	6	33
+chr15	95485240	95485340	Dbx2_window39	5	31
+chr15	95485265	95485365	Dbx2_window40	5	27
+chr15	95485290	95485390	Dbx2_window41	4	19
+chr15	95485315	95485415	Dbx2_window42	3	14
+chr15	95485340	95485440	Dbx2_window43	1	12
+chr10	20444676	20445116	Pde7b	72	177
+chr10	20444676	20444776	Pde7b_window1	21	34
+chr10	20444701	20444801	Pde7b_window2	22	65
+chr10	20444726	20444826	Pde7b_window3	27	90
+chr10	20444751	20444851	Pde7b_window4	49	126
+chr10	20444776	20444876	Pde7b_window5	57	145
+chr10	20444801	20444901	Pde7b_window6	57	146
+chr10	20444826	20444926	Pde7b_window7	50	139
+chr10	20444851	20444951	Pde7b_window8	43	116
+chr10	20444876	20444976	Pde7b_window9	33	72
+chr10	20444901	20445001	Pde7b_window10	21	53
+chr10	20444926	20445026	Pde7b_window11	15	38
+chr10	20444951	20445051	Pde7b_window12	7	14
+chr10	20444976	20445076	Pde7b_window13	7	11
+chr10	20445001	20445101	Pde7b_window14	7	8
+chr10	20445026	20445126	Pde7b_window15	4	7
+chr18	58715130	58715849	Slc27a6	36	166
+chr18	58715130	58715230	Slc27a6_window1	1	16
+chr18	58715155	58715255	Slc27a6_window2	1	19
+chr18	58715180	58715280	Slc27a6_window3	1	24
+chr18	58715205	58715305	Slc27a6_window4	6	31
+chr18	58715230	58715330	Slc27a6_window5	7	36
+chr18	58715255	58715355	Slc27a6_window6	8	42
+chr18	58715280	58715380	Slc27a6_window7	10	50
+chr18	58715305	58715405	Slc27a6_window8	11	57
+chr18	58715330	58715430	Slc27a6_window9	11	71
+chr18	58715355	58715455	Slc27a6_window10	13	74
+chr18	58715380	58715480	Slc27a6_window11	14	75
+chr18	58715405	58715505	Slc27a6_window12	14	78
+chr18	58715430	58715530	Slc27a6_window13	13	70
+chr18	58715455	58715555	Slc27a6_window14	11	69
+chr18	58715480	58715580	Slc27a6_window15	16	65
+chr18	58715505	58715605	Slc27a6_window16	16	52
+chr18	58715530	58715630	Slc27a6_window17	12	46
+chr18	58715555	58715655	Slc27a6_window18	8	32
+chr18	58715580	58715680	Slc27a6_window19	8	32
+chr18	58715605	58715705	Slc27a6_window20	9	35
+chr18	58715630	58715730	Slc27a6_window21	6	27
+chr18	58715655	58715755	Slc27a6_window22	5	24
+chr18	58715680	58715780	Slc27a6_window23	5	15
+chr18	58715705	58715805	Slc27a6_window24	5	13
+chr18	58715730	58715830	Slc27a6_window25	6	9
+chr18	58715755	58715855	Slc27a6_window26	5	8
+chr2	32816762	32817713	Rpl12	58	243
+chr2	32816762	32816862	Rpl12_window1	0	8
+chr2	32816787	32816887	Rpl12_window2	0	9
+chr2	32816812	32816912	Rpl12_window3	3	14
+chr2	32816837	32816937	Rpl12_window4	8	20
+chr2	32816862	32816962	Rpl12_window5	10	32
+chr2	32816887	32816987	Rpl12_window6	11	34
+chr2	32816912	32817012	Rpl12_window7	11	33
+chr2	32816937	32817037	Rpl12_window8	13	39
+chr2	32816962	32817062	Rpl12_window9	12	44
+chr2	32816987	32817087	Rpl12_window10	9	58
+chr2	32817012	32817112	Rpl12_window11	15	67
+chr2	32817037	32817137	Rpl12_window12	17	67
+chr2	32817062	32817162	Rpl12_window13	23	88
+chr2	32817087	32817187	Rpl12_window14	27	97
+chr2	32817112	32817212	Rpl12_window15	33	101
+chr2	32817137	32817237	Rpl12_window16	32	107
+chr2	32817162	32817262	Rpl12_window17	27	96
+chr2	32817187	32817287	Rpl12_window18	25	83
+chr2	32817212	32817312	Rpl12_window19	17	71
+chr2	32817237	32817337	Rpl12_window20	9	60
+chr2	32817262	32817362	Rpl12_window21	5	54
+chr2	32817287	32817387	Rpl12_window22	3	46
+chr2	32817312	32817412	Rpl12_window23	4	40
+chr2	32817337	32817437	Rpl12_window24	5	41
+chr2	32817362	32817462	Rpl12_window25	7	40
+chr2	32817387	32817487	Rpl12_window26	6	41
+chr2	32817412	32817512	Rpl12_window27	6	37
+chr2	32817437	32817537	Rpl12_window28	7	32
+chr2	32817462	32817562	Rpl12_window29	6	27
+chr2	32817487	32817587	Rpl12_window30	6	19
+chr2	32817512	32817612	Rpl12_window31	2	15
+chr2	32817537	32817637	Rpl12_window32	1	11
+chr2	32817562	32817662	Rpl12_window33	1	11
+chr2	32817587	32817687	Rpl12_window34	3	12
+chr2	32817612	32817712	Rpl12_window35	2	14
+chr2	32817637	32817737	Rpl12_window36	2	15
+chr9	106331200	106332399	Rpl29	94	304
+chr9	106331200	106331300	Rpl29_window1	4	11
+chr9	106331225	106331325	Rpl29_window2	4	13
+chr9	106331250	106331350	Rpl29_window3	5	15
+chr9	106331275	106331375	Rpl29_window4	6	17
+chr9	106331300	106331400	Rpl29_window5	6	17
+chr9	106331325	106331425	Rpl29_window6	7	19
+chr9	106331350	106331450	Rpl29_window7	8	18
+chr9	106331375	106331475	Rpl29_window8	10	18
+chr9	106331400	106331500	Rpl29_window9	12	21
+chr9	106331425	106331525	Rpl29_window10	14	24
+chr9	106331450	106331550	Rpl29_window11	15	22
+chr9	106331475	106331575	Rpl29_window12	16	31
+chr9	106331500	106331600	Rpl29_window13	14	34
+chr9	106331525	106331625	Rpl29_window14	16	40
+chr9	106331550	106331650	Rpl29_window15	27	73
+chr9	106331575	106331675	Rpl29_window16	24	75
+chr9	106331600	106331700	Rpl29_window17	32	96
+chr9	106331625	106331725	Rpl29_window18	41	114
+chr9	106331650	106331750	Rpl29_window19	42	120
+chr9	106331675	106331775	Rpl29_window20	48	127
+chr9	106331700	106331800	Rpl29_window21	36	130
+chr9	106331725	106331825	Rpl29_window22	35	116
+chr9	106331750	106331850	Rpl29_window23	32	119
+chr9	106331775	106331875	Rpl29_window24	27	90
+chr9	106331800	106331900	Rpl29_window25	14	74
+chr9	106331825	106331925	Rpl29_window26	12	64
+chr9	106331850	106331950	Rpl29_window27	8	62
+chr9	106331875	106331975	Rpl29_window28	8	56
+chr9	106331900	106332000	Rpl29_window29	9	41
+chr9	106331925	106332025	Rpl29_window30	6	28
+chr9	106331950	106332050	Rpl29_window31	8	29
+chr9	106331975	106332075	Rpl29_window32	8	30
+chr9	106332000	106332100	Rpl29_window33	6	24
+chr9	106332025	106332125	Rpl29_window34	9	22
+chr9	106332050	106332150	Rpl29_window35	9	23
+chr9	106332075	106332175	Rpl29_window36	6	22
+chr9	106332100	106332200	Rpl29_window37	5	19
+chr9	106332125	106332225	Rpl29_window38	3	15
+chr9	106332150	106332250	Rpl29_window39	1	18
+chr9	106332175	106332275	Rpl29_window40	1	15
+chr9	106332200	106332300	Rpl29_window41	0	9
+chr9	106332225	106332325	Rpl29_window42	0	11
+chr9	106332250	106332350	Rpl29_window43	3	12
+chr9	106332275	106332375	Rpl29_window44	3	7
+chr9	106332300	106332400	Rpl29_window45	3	8
+chr2	153116826	153117777	Kif3b	74	211
+chr2	153116826	153116926	Kif3b_window1	3	13
+chr2	153116851	153116951	Kif3b_window2	2	11
+chr2	153116876	153116976	Kif3b_window3	3	10
+chr2	153116901	153117001	Kif3b_window4	10	18
+chr2	153116926	153117026	Kif3b_window5	14	19
+chr2	153116951	153117051	Kif3b_window6	15	37
+chr2	153116976	153117076	Kif3b_window7	23	49
+chr2	153117001	153117101	Kif3b_window8	24	66
+chr2	153117026	153117126	Kif3b_window9	24	96
+chr2	153117051	153117151	Kif3b_window10	38	104
+chr2	153117076	153117176	Kif3b_window11	38	113
+chr2	153117101	153117201	Kif3b_window12	45	112
+chr2	153117126	153117226	Kif3b_window13	41	98
+chr2	153117151	153117251	Kif3b_window14	35	76
+chr2	153117176	153117276	Kif3b_window15	36	54
+chr2	153117201	153117301	Kif3b_window16	20	40
+chr2	153117226	153117326	Kif3b_window17	10	30
+chr2	153117251	153117351	Kif3b_window18	5	22
+chr2	153117276	153117376	Kif3b_window19	5	18
+chr2	153117301	153117401	Kif3b_window20	5	18
+chr2	153117326	153117426	Kif3b_window21	4	23
+chr2	153117351	153117451	Kif3b_window22	3	28
+chr2	153117376	153117476	Kif3b_window23	4	34
+chr2	153117401	153117501	Kif3b_window24	3	32
+chr2	153117426	153117526	Kif3b_window25	3	30
+chr2	153117451	153117551	Kif3b_window26	2	28
+chr2	153117476	153117576	Kif3b_window27	6	26
+chr2	153117501	153117601	Kif3b_window28	6	23
+chr2	153117526	153117626	Kif3b_window29	7	17
+chr2	153117551	153117651	Kif3b_window30	5	12
+chr2	153117576	153117676	Kif3b_window31	5	13
+chr2	153117601	153117701	Kif3b_window32	6	13
+chr2	153117626	153117726	Kif3b_window33	4	13
+chr2	153117651	153117751	Kif3b_window34	2	11
+chr2	153117676	153117776	Kif3b_window35	2	11
+chr2	153117701	153117801	Kif3b_window36	1	11
+chr1	133049497	133050192	Eif2d	146	406
+chr1	133049497	133049597	Eif2d_window1	1	15
+chr1	133049522	133049622	Eif2d_window2	1	22
+chr1	133049547	133049647	Eif2d_window3	3	31
+chr1	133049572	133049672	Eif2d_window4	8	61
+chr1	133049597	133049697	Eif2d_window5	37	112
+chr1	133049622	133049722	Eif2d_window6	53	151
+chr1	133049647	133049747	Eif2d_window7	74	209
+chr1	133049672	133049772	Eif2d_window8	92	242
+chr1	133049697	133049797	Eif2d_window9	111	295
+chr1	133049722	133049822	Eif2d_window10	128	306
+chr1	133049747	133049847	Eif2d_window11	115	285
+chr1	133049772	133049872	Eif2d_window12	92	241
+chr1	133049797	133049897	Eif2d_window13	62	197
+chr1	133049822	133049922	Eif2d_window14	50	136
+chr1	133049847	133049947	Eif2d_window15	28	105
+chr1	133049872	133049972	Eif2d_window16	11	39
+chr1	133049897	133049997	Eif2d_window17	12	35
+chr1	133049922	133050022	Eif2d_window18	11	28
+chr1	133049947	133050047	Eif2d_window19	10	23
+chr1	133049972	133050072	Eif2d_window20	8	28
+chr1	133049997	133050097	Eif2d_window21	4	16
+chr1	133050022	133050122	Eif2d_window22	5	13
+chr1	133050047	133050147	Eif2d_window23	1	10
+chr1	133050072	133050172	Eif2d_window24	1	8
+chr1	133050097	133050197	Eif2d_window25	1	6