--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test-data/sample2.tsv.idx	Tue May 05 06:57:10 2020 -0400
@@ -0,0 +1,101 @@
+ref_id	ref_start	ref_end	read_id	kmers	dwell_time	NNNNN_kmers	mismatch_kmers	missing_kmers	byte_offset	byte_len
+chr	22101	22103	7f1aeec8-0acc-4a78-8ff2-12116de7906f	2	0.024229999999999998	0	0	0	0	283
+chr	22101	22103	3fb36f87-41a9-4053-bba0-e9c99c0f3af4	2	0.02457	0	0	0	284	283
+chr	22101	22103	d6da51fb-29a9-4f08-a538-ad7a52d6e1e2	2	0.033519999999999994	0	0	0	568	278
+chr	22101	22103	833fd518-978e-4044-8640-a9d7c95c4783	2	0.01427	0	0	0	847	281
+chr	22101	22103	1c883a73-b331-4419-b280-d153eb932ba5	2	0.05777	0	0	0	1129	310
+chr	22101	22103	4b24388e-8804-421d-a416-6e84f24b437d	2	0.01992	0	0	0	1440	282
+chr	22101	22103	0a1578b4-b82c-48c3-934b-803f4bc9cb7e	2	0.01029	0	0	0	1723	283
+chr	22101	22103	27085b2d-47a1-4eb2-a6fe-d56385977a83	2	0.027549999999999998	0	0	0	2007	283
+chr	22101	22103	480de004-a586-4af7-b622-a805c27d079f	2	0.02689	0	0	0	2291	283
+chr	22101	22103	2e873328-dcad-4a50-a7bf-d1df635ea4ae	2	0.01925	0	0	0	2575	283
+chr	22101	22103	f15e9f80-aeba-4e3f-af6e-af9844913cd5	2	0.06341	0	0	0	2859	284
+chr	22101	22103	30636390-aa9f-44d3-a266-93e4e2678473	2	0.03353	0	0	0	3144	295
+chr	22101	22103	d21823f1-8123-4a8c-80d9-405da871be9a	2	0.02457	1	0	0	3440	286
+chr	22101	22103	61978e0e-8af4-4cdd-bada-4cf5388a769a	2	0.07272	0	0	0	3727	296
+chr	22101	22103	6d7545e1-c6db-4fd2-8ac5-5761352f8ffe	2	0.02524	0	0	0	4024	292
+chr	22101	22103	a26d4020-651b-46d6-aea4-992e5ea6240c	2	0.02889	0	0	0	4317	282
+chr	22101	22103	1fbca3f2-965c-4125-80f4-20093835e37e	2	0.0186	0	0	0	4600	271
+chr	22101	22103	310da5d9-d91e-42a9-98e0-edd2faa6c35a	2	0.02523	0	0	0	4872	280
+chr	22101	22103	a411aab8-428e-4226-88e6-b43ca3867bc6	2	0.02755	0	0	0	5153	297
+chr	22101	22103	de113ee4-1dba-4944-a316-2ca1fce725c4	2	0.015269999999999999	0	0	0	5451	282
+chr	22101	22103	d6bed947-c3a4-40a5-924c-b7d1819be0c9	2	0.02158	0	0	0	5734	280
+chr	22101	22103	5b6891eb-2494-4bf8-9c17-f8571560d4fb	2	0.045829999999999996	0	0	0	6015	282
+chr	22101	22103	3f102f7e-1248-4711-8f7d-00c52db6d5fc	2	0.05211	0	0	0	6298	285
+chr	22101	22103	181d2b5d-74e6-4c68-a6c9-324089b7f240	2	0.01394	0	0	0	6584	295
+chr	22101	22103	86be4133-d483-44bd-b5c2-6909afc50eae	2	0.021580000000000002	0	0	0	6880	281
+chr	22101	22103	1772961d-b04e-464e-8ed3-4899924ef650	2	0.05245	0	0	0	7162	283
+chr	22101	22103	c8d56420-ad47-4d46-85a7-dc12f7e026ad	2	0.04482	0	0	0	7446	280
+chr	22101	22103	2baae8e2-eae6-4772-afb0-ad461eddf0f3	2	0.07005	0	0	0	7727	291
+chr	22101	22103	81157c06-2ff9-4258-af13-32e687dbb5a2	2	0.024909999999999998	0	0	0	8019	295
+chr	22101	22103	cd18f101-5eb1-42f0-8b56-b6352f1ba69e	2	0.03021	0	0	0	8315	280
+chr	22101	22103	c213db3c-0250-43a5-bf8d-6f95cf17644c	2	0.03319	0	0	0	8596	296
+chr	22101	22103	981b494a-df51-42dd-b646-0df070f4efae	2	0.008969999999999999	0	0	0	8893	279
+chr	22101	22103	d2496ef6-c607-40d4-a6b3-b7c2b7871a1e	2	0.03519	0	0	0	9173	296
+chr	22101	22103	9c086e36-4d1c-4d1c-9917-db50c34c945c	2	0.03918	0	0	0	9470	283
+chr	22101	22103	eff0a3fc-6235-4bec-be1a-34ae44096120	2	0.01792	0	0	0	9754	281
+chr	22101	22103	0a70340e-9ecd-429a-98f3-26073faa5e29	2	0.041499999999999995	0	0	0	10036	283
+chr	22101	22103	d5cc0d32-d080-414c-97f1-2dab62fac7b0	2	0.02357	0	0	0	10320	282
+chr	22101	22103	6e1f3278-9f34-4695-b2d6-e29f7c66c6c9	2	0.022899999999999997	0	0	0	10603	283
+chr	22101	22103	3bbffd17-d7c8-486a-86fd-c10beb04e549	2	0.03387	0	0	0	10887	282
+chr	22101	22103	cb7181c8-3fe4-46cd-86f3-419ed9fc43ea	2	0.012289999999999999	0	0	0	11170	281
+chr	22101	22103	4b65f723-7a3e-41d2-99b8-b532f33b431d	2	0.01793	0	0	0	11452	282
+chr	22101	22103	34f3b477-fee8-4c5c-9d5e-878d3233c5ac	2	0.00763	0	0	0	11735	282
+chr	22101	22103	62955596-a9c8-4aae-80e9-68526b3c61e6	2	0.010950000000000001	0	0	0	12018	282
+chr	22101	22103	9be5fd79-c56b-43a3-9fcd-a7f99a6e8aa2	2	0.02489	0	0	0	12301	283
+chr	22101	22103	bff00f41-c3c5-4f10-8caa-3bfe1221f3a3	2	0.02723	0	0	0	12585	281
+chr	22101	22103	58264997-9ac8-4d8c-8dd5-837e5132646a	2	0.05313	0	0	0	12867	283
+chr	22101	22103	74838d35-d7a0-4a2e-b5c2-53b68ba407a8	2	0.03818	0	0	0	13151	282
+chr	22101	22103	a0e528ef-2a70-445c-9bed-cf6e93e8c3a8	2	0.03519	0	0	0	13434	296
+chr	22101	22103	9a0198f3-8a28-4724-a36d-4bb7f66e6951	2	0.022240000000000003	0	0	0	13731	283
+chr	22101	22103	5885e81a-2438-46b9-b688-9b9982f8570a	2	0.0332	0	0	0	14015	282
+chr	22101	22103	667bd035-80ca-40f2-b972-9f4407e172e6	2	0.03254	0	0	0	14298	282
+chr	22101	22103	3e9c6592-c128-48f5-9612-7dc484b9e44e	2	0.02722	0	0	0	14581	282
+chr	22101	22103	2fd8c241-c12b-4875-8d0c-c5fc81bb09b9	2	0.027899999999999998	0	0	0	14864	279
+chr	22101	22103	49ec73c1-6e4a-430a-a005-528c84080a97	2	0.06939	0	0	0	15144	280
+chr	22101	22103	efacaac8-54ba-4a97-a693-f281d840244e	2	0.043489999999999994	0	0	0	15425	295
+chr	22101	22103	bb314309-4158-4609-87ce-51c2d726bf8c	2	0.032869999999999996	0	0	0	15721	283
+chr	22101	22103	985fd02c-339f-48f1-84f3-a6b97ec7ea00	2	0.02722	0	0	0	16005	282
+chr	22101	22103	05408a96-d1a6-4b61-8db0-33ad56798cf3	2	0.01593	0	0	0	16288	271
+chr	22101	22103	842c3bbc-b856-49b8-bd6a-2f53af0f7025	2	0.03385	0	0	0	16560	295
+chr	22101	22103	f5f10a73-9076-4593-9dac-4be9be7acff9	2	0.07106	0	0	0	16856	284
+chr	22101	22103	48e172d4-b919-4a98-864e-b475897444fb	2	0.02491	0	0	0	17141	283
+chr	22101	22103	bfd1efac-c38a-4140-8e44-6dd000f28d73	2	0.04017	0	0	0	17425	283
+chr	22101	22103	dc162623-c4b8-4b4a-bbb7-4f9e7112f0ad	2	0.01892	0	0	0	17709	282
+chr	22101	22103	f8f8bfed-8440-4e31-a8cd-cebe450bfa4e	2	0.00996	0	0	0	17992	281
+chr	22101	22103	c8bea253-ba31-4a0c-af06-7eb37c4a9623	2	0.03485	0	0	0	18274	292
+chr	22101	22103	989d7bda-cedb-42d2-b5e2-c4d17e41efca	2	0.01394	0	0	0	18567	277
+chr	22101	22103	7a23ce30-3227-4e9a-a5ba-1db7bdee9ced	2	0.0186	0	0	0	18845	281
+chr	22101	22103	dd2f645b-8681-48f0-9b62-4b32e0d7c9be	2	0.0156	1	0	0	19127	285
+chr	22101	22103	b05e5251-cfa8-4288-bf67-5c5410967df8	2	0.05643	0	0	0	19413	284
+chr	22101	22103	15c009c3-be67-4bc5-8a6a-23d00002c4b1	2	0.04748	0	0	0	19698	295
+chr	22101	22103	da9b7780-e640-400b-b8c9-6101df31d9a7	2	0.02224	0	0	0	19994	282
+chr	22101	22103	22677b8e-1d20-40a9-946c-7539493679ab	2	0.05910000000000001	0	0	0	20277	296
+chr	22101	22103	a04813a6-f9a5-40b7-8e76-331b2ebdae49	2	0.03353	0	0	0	20574	282
+chr	22101	22103	104a2b7e-3ae3-44ae-8779-c2adeff6c76f	2	0.01725	0	0	0	20857	282
+chr	22101	22103	e998fbe2-8c0d-4c5c-bf4f-7185e18ebc07	2	0.05013	0	0	0	21140	284
+chr	22101	22103	cb76917c-aa84-4282-ade3-d7375a4e6424	2	0.039169999999999996	0	0	0	21425	282
+chr	22101	22103	5a627c4a-2572-4efe-95da-8a3aac4869ea	2	0.020579999999999998	0	0	0	21708	282
+chr	22101	22103	6ce91c6b-2aa2-4478-a673-e5fd15c6e47b	2	0.01129	0	0	0	21991	281
+chr	22101	22103	a4ddc34d-d8cc-4e3d-80cb-f81e72e1f2c8	2	0.05245	0	0	0	22273	283
+chr	22101	22103	8c1f3066-b069-4135-a723-b96f36d38a15	2	0.03253	0	0	0	22557	281
+chr	22101	22103	c5d34993-bd1a-4b18-a428-d78454cd7ccb	2	0.01593	0	0	0	22839	283
+chr	22101	22103	4f01921d-c683-4e85-8597-810c109eb4fd	2	0.05411	0	0	0	23123	283
+chr	22101	22103	fcf407e9-9252-4255-af72-61893b319e0f	2	0.03718	0	0	0	23407	278
+chr	22101	22103	a9313b9f-c533-4b3f-88bb-1d8e009855f4	2	0.04648	0	0	0	23686	283
+chr	22101	22103	e8f7ee19-62e2-4096-95ee-428acd6c366f	2	0.04911	0	0	0	23970	295
+chr	22101	22103	96781b24-815e-40ad-b2d5-8557fb102427	2	0.0405	0	0	0	24266	283
+chr	22101	22103	554e41cc-2fbf-419d-ba17-421a50fdb706	2	0.04715	0	0	0	24550	294
+chr	22101	22103	11a7069d-f176-41a3-a1af-799a2115de20	2	0.032869999999999996	0	0	0	24845	282
+chr	22101	22103	ccf05612-40af-4cdb-a7dd-940c9129d4f3	2	0.07967	0	0	0	25128	284
+chr	22101	22103	46b7c4ff-9ab5-40c8-9792-d7523178afbc	2	0.020919999999999998	0	0	0	25413	296
+chr	22101	22103	cabb84ef-c6c0-4e07-beff-e5eed05198d5	2	0.02224	0	0	0	25710	281
+chr	22101	22103	caeb4080-a076-4b28-87ff-71c109ccfc8e	2	0.028550000000000002	0	0	0	25992	295
+chr	22101	22103	c2d50882-3d64-4dd0-895e-017e2c40782e	2	0.03552	0	0	0	26288	283
+chr	22101	22103	7e834f65-217d-4f76-9294-99bcb7319211	2	0.01261	0	0	0	26572	282
+chr	22101	22103	ee04c7b7-669f-4d84-a589-63e8195cd11d	2	0.06738999999999999	0	0	0	26855	295
+chr	22101	22103	df7fde92-d62a-480d-a573-5568a21baf4a	2	0.05312	0	0	0	27151	298
+chr	22101	22103	7e7c3159-d7ba-415c-aafd-5b6101cce083	2	0.04881	0	0	0	27450	295
+chr	22101	22103	2ead04b2-a520-4623-bed1-c58b2de4ad13	2	0.01726	0	0	0	27746	282
+chr	22101	22103	1b7e8d9c-dbc7-4131-87da-76ab5c31cef5	2	0.032869999999999996	0	0	0	28029	281
+chr	22101	22103	44f13b68-e386-4e9c-ba0d-eb9b8afe07a4	2	0.05245	0	0	0	28311	283