Depth corrected	Ice age (GT4)	Gas age	CH4 (ppbv)
149.2	5683	2347	668
173.1	6828	3634	636
177.4	7043	3833	595
228.7	9528	6225	588
236.4	9901	6614	574
266	11334	8113	616
303.8	13526	10189	667
321.2	14538	11013	621
325	14775	11143	511
331.7	15215	11329	477
342.1	15922	11719	501
356	16974	12626	662
365.6	17755	13412	610
366.2	17803	13457	642
381.7	19089	14241	445
426.3	22829	16417	395
443.5	24315	17695	363
458.3	25557	18950	349
471	26595	20004	379
491.3	28356	21636	348
506.4	29630	22977	406
507.4	29716	23059	339
510.2	29967	23392	371
513.6	30250	23714	377
517.6	30591	24146	403
519.7	30761	24327	403
522.5	30998	24643	340
522.6	31011	24654	360
522.7	31020	24662	381
525.6	31266	24875	358
528.2	31487	25073	392
532.2	31828	25423	377
532.4	31845	25440	381
532.4	31845	25440	379
535	32058	25684	360
540	32465	25999	363
541.5	32583	26099	382
541.5	32583	26099	386
545.2	32887	26336	387
547	33042	26471	412
549.4	33240	26672	426
552	33461	26884	418
554.2	33646	27064	448
556.5	33833	27342	464
560.2	34136	27702	435
562.5	34318	27951	416
563.1	34371	28016	403
565.2	34530	28195	382
569.2	34832	28551	396
571.4	34985	28743	425
574.3	35210	28943	435
577.8	35464	29130	436
581.8	35766	29410	421
582.8	35839	29493	416
583.3	35876	29542	429
589.2	36346	30175	481
591.7	36558	30385	489
593.8	36729	30591	482
599.1	37157	31088	394
602.6	37444	31479	429
609.7	38013	32176	469
612	38203	32384	505
615.5	38491	32715	548
617.7	38678	32952	532
619.5	38826	33161	520
622.2	39039	33474	530
625.1	39268	33823	509
627.6	39464	34108	500
627.6	39464	34108	483
629.2	39593	34285	484
633.4	39917	34644	418
635.1	40060	34784	403
639.5	40424	35038	459
641.3	40573	35163	414
644.6	40841	35387	375
648	41112	35573	423
649.2	41209	35645	443
653.8	41551	35883	431
664.1	42305	36641	484
682	43702	38109	520
683	43785	38201	493
694.6	44764	39388	424
699.5	45181	39828	448
706.1	45770	40626	537
712.9	46360	41358	522
724.8	47360	42131	441
748.3	49296	43546	419
765.3	50634	44788	402
788.2	52446	47024	466
812	54457	49398	504
834.8	56300	51174	480
860.6	58258	52870	514
885.3	60288	55564	528
911.4	62633	57737	442
937.3	65016	59604	411
962.4	67405	61582	414
986.3	69627	63694	415
1011.3	71767	65701	434
1037.5	74017	68495	424
1062.2	76023	71014	458
1087.2	78042	72849	430
1112.6	80064	75367	462
1137.7	81921	76875	402
1162.1	83615	78995	438
1186.5	85262	81122	497
1209.7	86826	82843	545
1237.2	88808	84929	594
1261.2	90609	86323	529
1289.2	92632	88051	425
1309.2	94039	89363	417
1338.2	96047	91691	454
1363.7	97841	93660	443
1387.2	99498	95349	406
1413	101234	96900	407
1442.8	103125	99067	476
1451.4	103726	99833	480
1463.3	104574	100842	521
1476.1	105492	101829	493
1505	107599	103372	559
1526.2	109395	105204	591
1532	109872	105675	564
1542.1	110674	106203	437
1557.4	111923	107007	451
1582.8	113952	108994	468
1614.8	116215	111442	448
1627.7	117059	112559	443
1630.3	117221	112793	463
1637.7	117677	113479	505
1638.8	117747	113574	483
1643.4	118037	114031	497
1649	118376	114508	511
1654.5	118705	115060	485
1658.6	118958	115401	503
1664.5	119314	115768	520
1667.6	119504	116037	550
1669.5	119620	116200	531
1671.3	119728	116353	548
1674.2	119907	116605	575
1680	120259	117052	541
1684.5	120528	117342	555
1686.2	120623	117446	572
1688.4	120749	117589	590
1694	121079	117964	560
1694.6	121116	118010	573
1697.7	121296	118205	575
1704.7	121710	118631	563
1708.8	121941	118853	559
1714.2	122245	119164	589
1716	122345	119273	573
1719.4	122538	119499	584
1722.6	122718	119704	591
1731.2	123222	120320	603
1735.2	123443	120571	601
1736.8	123535	120652	578
1739	123658	120765	606
1744.3	123953	121090	592
1751.5	124348	121561	598
1754.3	124505	121752	594
1759.4	124787	122020	618
1765.5	125136	122367	592
1768.5	125298	122528	594
1770	125380	122606	600
1775.7	125692	122968	598
1780	125933	123279	604
1783.1	126109	123445	601
1786.8	126316	123677	622
1789.2	126447	123815	602
1789.4	126458	123826	630
1794.2	126710	124077	618
1797.8	126893	124244	619
1804.5	127236	124597	610
1814.8	127750	125176	649
1818.4	127930	125354	645
1819.6	127992	125424	623
1820.4	128032	125468	677
1824.6	128239	125679	672
1831	128549	126093	633
1832.3	128614	126200	644
1834.2	128712	126343	644
1834.7	128738	126380	636
1838.5	128932	126652	632
1844.8	129266	127008	638
1848.4	129450	127214	655
1852.3	129669	127440	666
1853.9	129752	127526	683
1857.4	129937	127716	653
1860.6	130111	127890	687
1863.8	130286	128080	708
1869.4	130605	128364	710
1870.2	130653	128399	699
1874.4	130904	128576	700
1875.5	130973	128632	704
1878.8	131178	128812	676
1883.3	131459	129062	552
1884.2	131519	129125	565
1888.6	131813	129348	540
1893.4	132149	129675	560
1897.9	132470	129898	524
1903.6	132880	130172	542
1910.9	133444	130549	492
1921.5	134310	131146	477
1922.3	134383	131195	491
1932.1	135318	131795	453
1954.6	137611	133340	431
1969.9	139296	134211	399
1980.2	140452	135003	352
1987.4	141257	135683	357
1994.7	142075	136367	374
1998	142440	136659	377
2005.9	143326	137393	348
2009.4	143720	137686	339
2016.4	144496	138408	318
2030.9	146122	140072	319
2042.5	147403	141422	345
2063.7	149756	143980	355
2088.6	152467	146784	356
2102.4	154026	148566	400
2109	154786	149406	418
2116	155625	150303	410
2119	155987	150633	376
2127.2	156981	151441	395
2137.1	158157	152562	445
2143	158819	153173	414
2153.4	159908	154129	382
2164	161077	155299	377
2167.2	161450	155706	406
2177.3	162574	157299	403
2180.4	162912	157806	381
2196.4	164820	159791	376
2225	168391	162996	405
2247	170922	165278	420
2273	174105	169266	478
2302	177644	172596	456
2312.3	179000	174189	402
2325	180546	175440	468
2348	183525	178550	503
2363	185640	180779	522
2373	187067	181718	464
2386	188892	183355	470
2399	190587	185063	510
2414	192382	187199	445
2425	193816	189335	440
2437	195298	191057	414
2475	199904	195625	460
2501	202717	199292	558
2525	205458	202212	612
2543	207803	204283	482
2552	208947	205148	425
2554.9	209310	205439	421
2557.7	209648	205715	413
2560.9	210056	206122	436
2564.9	210526	206675	466
2567.5	210840	207033	463
2570.4	211178	207418	455
2574.2	211628	207991	496
2575.5	211784	208183	475
2579.9	212295	208796	476
2581.9	212531	209078	485
2584.7	212846	209414	515
2588.5	213282	209975	473
2590.4	213503	210237	498
2595.1	214036	210830	567
2596.7	214219	211005	503
2600.4	214642	211481	509
2603.7	215011	211929	586
2606.6	215343	212281	551
2609.7	215685	212662	554
2612.5	216019	213010	545
2615.5	216377	213385	569
2621.7	217099	214153	581
2629	217944	214996	558
2633.5	218492	215504	568
2636.7	218908	215879	586
2639.5	219276	216310	544
2643.7	219835	216923	557
2646.4	220230	217253	541
2649.4	220678	217577	483
2656.2	221718	218342	440
2659.5	222273	218767	436
2666.7	223548	219680	476
2669.4	224060	220047	473
2674.6	224993	220760	498
2676.9	225380	220997	480
2682.6	226339	221612	482
2691	227885	222958	494
2693.6	228349	223446	532
2698	229167	224630	532
2700.5	229641	225136	512
2702.9	230076	225535	506
2705.6	230547	225888	497
2707.9	230945	226213	483
2711.8	231619	226726	484
2714.7	232092	227224	476
2717.7	232571	227840	445
2732.5	234771	230668	439
2735.7	235233	231383	460
2738.7	235652	231990	495
2741.9	236109	232615	502
2744.8	236498	233139	514
2747.6	236866	233646	541
2751.1	237301	234126	540
2753.6	237602	234470	550
2756.2	237889	234781	540
2759.2	238213	235222	554
2765.2	238907	236234	582
2771.2	239672	237466	619
2773.5	240010	237834	631
2776.5	240465	238199	650
2780	241055	238623	500
2782.8	241549	238943	554
2785.5	242091	239249	538
2788.5	242675	239545	522
2794.6	243821	240205	498
2797.5	244444	240576	484
2800.5	245091	240966	470
2806.5	246378	242067	509
2815.6	248369	243657	402
2818.5	249027	244198	437
2821.5	249668	244861	401
2824.5	250307	245481	380
2830.4	251542	246709	405
2833.8	252268	247436	399
2836.5	252876	248083	424
2839.5	253557	248977	447
2842.4	254218	249751	465
2845.5	254871	250460	467
2851.5	256180	251519	421
2854.4	256860	252183	410
2857.5	257602	252957	511
2860.5	258358	253889	486
2866.5	259879	255230	398
2870.4	260916	256038	408
2872.7	261510	256489	385
2876.2	262453	257245	402
2881.5	263865	258495	457
2884.5	264663	259226	445
2887.5	265454	259956	426
2890.5	266260	260759	448
2893.5	267040	261596	454
2896.4	267804	262388	448
2899.5	268556	263204	441
2902.5	269304	264042	442
2905.5	270050	264831	443
2911.4	271448	266485	417
2914.5	272177	267443	453
2917.5	272836	268273	429
2919.4	273254	268677	441
2926.5	274800	270677	484
2935.5	276729	273010	472
2941.5	278016	274443	508
2944.5	278704	275209	516
2951.2	280356	276867	522
2956.5	281738	277924	430
2964.5	283807	279541	430
2973.9	286496	282325	507
2979.5	288010	283491	464
2988.6	290551	286214	482
2994.5	292129	287852	522
2997.5	292853	288492	454
3000.4	293619	289444	433
3003.5	294493	290568	438
3009.5	296156	292472	475
3015.6	297835	293700	429
3018.5	298620	294611	468
3021.5	299407	295514	464
3027.7	300970	297181	460
3030.4	301671	298058	487
3033.5	302450	299016	486
3036.5	303199	299875	511
3039.5	303931	300639	545
3042.5	304738	301489	539
3045.5	305609	302452	603
3048.5	306552	303328	568
3051.5	307461	303951	588
3054.5	308352	304584	435
3057.7	309277	305303	443
3060.5	310076	306088	457
3063.5	310900	307124	478
3066.5	311701	308097	478
3072.5	313289	310035	488
3075.6	314077	310980	522
3078.5	314816	311769	570
3081.6	315590	312666	561
3084.6	316319	313510	589
3087.8	317098	314366	624
3090.5	317773	315139	620
3093.5	318507	315937	621
3096.4	319224	316674	639
3099.5	319976	317442	627
3102.5	320731	318261	637
3105.5	321446	318978	639
3109.5	322330	319871	636
3111.5	322753	320388	604
3114.8	323439	321383	604
3117.5	324019	322109	647
3119.7	324496	322618	665
3120.6	324718	322833	731
3123.5	325403	323488	773
3126.5	326197	324186	575
3129.9	327237	324991	581
3132.4	328055	325525	588
3135.5	329132	326236	558
3138.5	330287	327121	537
3141.5	331496	328084	517
3145	333066	329234	471
3147.5	334351	330204	451
3153.5	337299	332289	458
3156.5	338745	333600	371
3159.5	340342	335404	383
3162.8	341844	336967	342
3165.5	343109	338273	369
3169	344841	340163	422
3171.5	346049	341572	397
3174.5	347584	342993	442
3177.8	349293	344729	406
3180.5	350757	346095	384
3183.4	352372	347604	398
3186.5	354121	349160	391
3189.5	355789	350759	386
3192.5	357445	352406	392
3195.7	359181	354326	384
3199	360896	356202	399
3200	361445	356838	399
3201.4	362204	357728	396
3204.7	363957	359682	454
3207.5	365473	361167	422
3210.6	367094	362814	386
3213.7	368664	364471	397
3216.5	370069	366191	432
3219.5	371827	368105	463
3222.5	373615	369552	517
3225.5	375314	370919	405
3228.9	377171	373007	432
3231.5	378475	374567	482
3237.5	381820	378183	521
3240.5	383388	379625	445
3243.5	384986	381612	516
3246.5	386818	383527	542
3249.5	388758	384910	578
3252.5	390609	386543	567
3255.5	392628	388652	544
3258.5	394611	390567	439
3261.5	396400	392427	448
3264.5	398086	394620	478
3267.5	399720	396698	550
3270.6	401444	398575	574
3273.8	403146	400362	566
3276.5	404597	401860	598
3280.5	406690	404164	600
3283.5	408217	405823	672
3286.5	409724	407442	634
3289.5	411177	408995	644
3292.8	412968	410793	623
3295.5	414399	412182	626
3299	416327	414080	653
3301.4	417656	415452	678
3304.4	419336	417173	695