The data presented here are preliminary data on a preliminary timescale from the North Greenland Ice Core Project (NorthGRIP). The NorthGRIP ice core project was directed and organized by the Ice and Climate Research Group at the Niels Bohr Institute, University of Copenhagen. It has been supported by funding agencies in Denmark (SNF), Belgium (FNRS-CFB), France (IFRTP and INSU/CNRS), Germany (AWI), Iceland (RannIs), Japan (MEXT), Sweden (SPRS), Switzerland (SNF) and the United States of America (NSF). 32100.5 0.843875 32101.5 0.707536 32102.5 0.84437 32103.5 1.04411 32104.5 1.20644 32105.5 1.00064 32106.5 1.07614 32107.5 1.10948 32108.5 1.02182 32109.5 0.856214 32110.5 0.98148101 32111.5 1.21182 32112.5 1.30375 32113.5 0.92192602 32114.5 1.01654 32115.5 0.82803702 32116.5 0.91921401 32117.5 0.969107 32118.5 0.701444 32119.5 0.88946402 32120.5 0.833357 32121.5 0.82135701 32122.5 0.626964 32123.5 0.71367901 32124.5 0.69632101 32125.5 0.9345 32126.5 0.907138 32127.5 0.95682102 32128.5 1.00732 32129.5 0.920964 32130.5 0.78350001 32131.5 1.01279 32132.5 0.8835 32133.5 1.07546 32134.5 0.923464 32135.5 0.91267901 32136.5 1.06075 32137.5 0.842393 32138.5 0.824429 32139.5 0.69475001 32140.5 0.685483 32141.5 1.07611 32142.5 0.967821 32143.5 0.743464 32144.5 0.666214 32145.5 0.854828 32146.5 0.84842902 32147.5 1.12786 32148.5 0.778857 32149.5 0.6705 32150.5 0.918414 32151.5 0.880179 32152.5 0.849357 32153.5 0.746643 32154.5 0.72757101 32155.5 0.904207 32156.5 1.09196 32157.5 1.09089 32158.5 0.88625001 32159.5 1.01396 32160.5 1.0825 32161.5 1.5433 32162.5 1.0777 32163.5 0.929133 32164.5 1.06517 32165.5 0.953864 32166.5 0.72203302 32167.5 0.746367 32168.5 1.0215 32169.5 0.965967 32170.5 0.89780002 32171.5 0.87876701 32172.5 1.35257 32173.5 0.832933 32174.5 0.8081 32175.5 1.1943 32176.5 0.718367 32177.5 0.919419 32178.5 0.892167 32179.5 0.770581 32180.5 1.4388 32181.5 1.2397 32182.5 1.19065 32183.5 0.934733 32184.5 1.0341 32185.5 0.68006402 32186.5 0.756867 32187.5 0.741452 32188.5 1.0041 32189.5 1.10767 32190.5 1.26781 32191.5 1.02027 32192.5 0.847548 32193.5 0.64786702 32194.5 0.901033 32195.5 0.74332302 32196.5 0.690323 32197.5 0.85325801 32198.5 0.71306401 32199.5 0.749742 32200.5 0.81832301 32201.5 0.72461301 32202.5 0.971267 32203.5 0.756194 32204.5 1.05423 32205.5 0.829161 32206.5 0.98987102 32207.5 0.79538702 32208.5 0.798 32209.5 0.784903 32210.5 0.757871 32211.5 0.6311 32212.5 0.617714 32213.5 1.09369 32214.5 1.23523 32215.5 1.01327 32216.5 0.872103 32217.5 0.827867 32218.5 0.69183301 32219.5 0.85133302 32220.5 0.87148302 32221.5 0.9127 32222.5 0.8619 32223.5 0.75996702 32224.5 0.860034 32225.5 0.811733 32226.5 0.878867 32227.5 1.00014 32228.5 0.720433 32229.5 0.76313 32230.5 0.79336702 32231.5 0.787714 32232.5 0.702037 32233.5 0.865519 32234.5 0.7565 32235.5 0.748111 32236.5 0.74885201 32237.5 0.901231 32238.5 0.89585202 32239.5 0.74474102 32240.5 0.804192 32241.5 0.88137 32242.5 0.788296 32243.5 0.820037 32244.5 0.912565 32246.5 0.761211 32247.5 0.811154 32248.5 0.91237002 32249.5 0.98325002 32250.5 0.988 32251.5 0.844741 32252.5 0.95887 32253.5 0.736227 32254.5 0.688136 32255.5 0.943227 32256.5 1.16761 32257.5 1.13418 32258.5 1.04355 32259.5 1.02459 32260.5 1.07286 32261.5 1.01123 32262.5 1.18232 32263.5 1.09505 32264.5 1.08027 32265.5 0.972409 32266.5 0.921636 32267.5 0.61468201 32268.5 1.03152 32269.5 1.55355 32270.5 0.97250002 32271.5 1.11368 32272.5 2.79955 32273.5 1.35791 32274.5 0.792409 32275.5 1.45877 32276.5 1.09873 32277.5 0.82525002 32278.5 1.0045 32279.5 1.83478 32280.5 1.59883 32281.5 1.32506 32282.5 1.81716 32283.5 2.09783 32284.5 2.01356 32285.5 2.15806 32286.5 1.03594 32287.5 1.96156 32288.5 1.98422 32289.5 1.96853 32290.5 1.48928 32291.5 1.1885 32292.5 1.28578 32293.5 1.79483 32294.5 1.42878 32295.5 1.29884 32296.5 1.83228 32297.5 2.07967 32298.5 1.23172 32299.5 1.41928 32300.5 1.40011 32301.5 1.57917 32302.5 1.42679 32303.5 2.06089 32304.5 1.28372 32305.5 1.04211 32306.5 0.694667 32307.5 1.38437 32308.5 1.61587 32309.5 1.59133 32310.5 1.15447 32311.5 1.64143 32312.5 2.09127 32313.5 2.36167 32314.5 1.4858 32315.5 1.126 32316.5 0.98266702 32317.5 1.4244 32318.5 1.5044 32319.5 1.66257 32320.5 2.4437301 32321.5 3.2108 32322.5 2.71293 32323.5 2.039 32324.5 1.96413 32325.5 1.5352 32326.5 3.0255 32327.5 3.1512 32328.5 1.56593 32329.5 1.30713 32330.5 1.90479 32331.5 0.968533 32332.5 1.30247 32333.5 1.1574 32334.5 1.69971 32335.5 2.17893 32336.5 2.0327301 32337.5 1.48287 32338.5 2.3185 32339.5 1.757 32340.5 1.76013 32341.5 2.07893 32342.5 1.26993 32343.5 1.75653 32344.5 2.99421 32345.5 2.70908 32346.5 1.93371 32347.5 1.41969 32348.5 1.34477 32349.5 1.22492 32350.5 1.17231 32351.5 1.577 32352.5 1.18115 32353.5 1.09038 32354.5 1.02662 32355.5 2.519 32356.5 3.27946 32357.5 2.55108 32358.5 2.92338 32359.5 3.01215 32360.5 1.57762 32361.5 1.97286 32362.5 2.1008501 32363.5 2.8496201 32364.5 3.54646 32365.5 4.05469 32366.5 2.181 32367.5 2.15338 32368.5 1.673 32369.5 1.79377 32370.5 3.09938 32371.5 2.14069 32372.5 1.37946 32373.5 1.11246 32374.5 1.72785 32375.5 1.71092 32376.5 1.00469 32377.5 1.88343 32378.5 2.10977 32379.5 1.68508 32380.5 1.48031 32381.5 1.78838 32382.5 1.31862 32383.5 2.00762 32384.5 2.25192 32385.5 1.53922 32387.5 1.3678 32388.5 1.30125 32389.5 1.17162 32390.5 1.59723 32391.5 1.591 32392.5 2.24831 32393.5 2.31762 32394.5 1.28183 32395.5 1.23108 32396.5 2.237 32397.5 2.085 32398.5 1.79738 32399.5 2.48492 32400.5 1.86162 32401.5 2.15908 32402.5 1.68033 32403.5 1.23908 32404.5 1.363 32405.5 2.079 32406.5 3.45962 32407.5 3.10715 32408.5 2.09083 32409.5 2.15369 32410.5 2.60375 32411.5 2.29 32412.5 2.3203101 32413.5 2.02875 32414.5 1.93115 32415.5 1.46185 32416.5 1.68992 32417.5 3.2637701 32418.5 3.88985 32419.5 2.01375 32420.5 2.1170001 32421.5 1.46262 32422.5 3.01142 32423.5 2.84354 32424.5 2.46675 32425.5 1.71377 32426.5 2.02515 32427.5 1.26267 32428.5 1.67 32429.5 1.30508 32430.5 1.692 32431.5 1.62533 32432.5 1.74331 32433.5 3.58292 32434.5 1.75938 32435.5 1.34954 32436.5 1.97438 32437.5 2.10831 32438.5 1.91462 32439.5 2.28462 32440.5 2.65562 32441.5 1.61108 32442.5 2.61608 32443.5 1.98846 32444.5 1.95092 32445.5 1.84262 32446.5 1.59023 32447.5 1.987 32448.5 1.69008 32449.5 1.32377 32450.5 1.89315 32451.5 1.80892 32452.5 2.03123 32453.5 1.28333 32454.5 1.01192 32455.5 1.38377 32456.5 1.25423 32457.5 1.14546 32458.5 1.56308 32459.5 1.42762 32460.5 2.52754 32461.5 1.688 32462.5 2.06792 32463.5 3.36208 32464.5 5.34042 32465.5 3.01069 32466.5 2.34385 32467.5 2.87008 32468.5 3.42631 32469.5 3.57623 32470.5 2.28615 32471.5 1.83115 32472.5 1.15523 32473.5 1.00667 32474.5 3.09577 32475.5 3.15533 32476.5 2.77692 32477.5 3.05575 32478.5 2.19708 32479.5 2.34925 32480.5 3.15954 32481.5 2.96067 32482.5 1.30315 32483.5 0.874833 32484.5 2.10308 32485.5 3.97608 32486.5 2.78823 32487.5 1.31625 32488.5 1.35027 32489.5 1.18483 32490.5 1.10277 32491.5 1.462 32492.5 1.78285 32493.5 1.72267 32494.5 1.47069 32495.5 1.63675 32496.5 2.11215 32497.5 2.69533 32498.5 2.44323 32499.5 1.46567 32500.5 1.79215 32501.5 2.98925 32502.5 3.38185 32503.5 2.297 32504.5 1.27723 32505.5 1.9885 32506.5 2.11885 32507.5 3.49958 32508.5 2.47185 32509.5 2.03633 32510.5 2.55323 32511.5 2.6095 32512.5 1.45131 32513.5 1.96992 32514.5 1.61208 32515.5 1.56075 32517.5 0.9 32518.5 1.01917 32519.5 1.73233 32520.5 2.5766201 32521.5 1.73192 32522.5 2.39742 32523.5 1.971 32524.5 1.70058 32525.5 1.42292 32526.5 1.853 32527.5 1.5675 32528.5 1.43075 32529.5 1.43923 32530.5 1.40208 32531.5 2.4935 32532.5 2.0806701 32533.5 1.47158 32534.5 1.40954 32535.5 1.30375 32536.5 1.01 32537.5 1.52017 32538.5 1.27238 32539.5 1.34425 32540.5 2.8375 32541.5 1.97283 32542.5 1.3355 32543.5 2.12023 32544.5 1.82008 32545.5 1.86133 32546.5 4.04958 32547.5 3.58985 32548.5 2.52883 32549.5 1.95292 32550.5 1.75575 32551.5 2.12 32552.5 2.31069 32553.5 1.91567 32554.5 1.62708 32555.5 2.161 32556.5 1.47154 32557.5 1.91175 32558.5 4.42833 32559.5 3.98417 32560.5 2.15608 32561.5 1.69938 32562.5 1.44327 32563.5 1.63658 32564.5 1.77083 32565.5 1.92791 32566.5 1.42542 32567.5 1.76873 32568.5 2.44725 32569.5 1.63025 32570.5 1.58127 32571.5 1.40825 32572.5 1.3365 32573.5 1.45236 32574.5 2.215 32575.5 2.94755 32576.5 3.56267 32577.5 2.85233 32578.5 2.87782 32579.5 3.20383 32580.5 1.60867 32581.5 2.36355 32582.5 2.16375 32583.5 2.80127 32584.5 1.91383 32585.5 1.07942 32586.5 1.37545 32587.5 1.55533 32588.5 2.32425 32589.5 2.759 32590.5 2.23642 32591.5 2.15409 32592.5 2.93567 32593.5 2.18033 32594.5 2.442 32595.5 2.51508 32596.5 1.75525 32597.5 2.83373 32598.5 3.29633 32599.5 2.0248301 32600.5 1.90236 32601.5 1.40767 32602.5 1.73627 32603.5 1.46842 32604.5 2.28025 32605.5 2.20236 32606.5 1.96308 32607.5 2.52467 32608.5 2.09 32609.5 2.34833 32610.5 2.22442 32611.5 2.1777501 32612.5 1.92082 32613.5 2.15225 32614.5 1.49833 32615.5 1.44133 32616.5 0.96425002 32617.5 1.03175 32618.5 1.87309 32619.5 2.8833301 32620.5 2.52233 32621.5 1.96417 32622.5 1.35992 32623.5 2.88167 32624.5 2.32882 32625.5 2.3949201 32626.5 3.69108 32627.5 2.80108 32628.5 2.5018301 32629.5 1.677 32630.5 1.0295 32631.5 1.85142 32632.5 2.52942 32633.5 1.62658 32634.5 1.90717 32635.5 1.84355 32636.5 1.05217 32637.5 1.50658 32638.5 1.18342 32639.5 0.798583 32640.5 0.89083302 32641.5 1.26964 32642.5 1.53742 32643.5 1.47783 32644.5 2.08917 32645.5 2.5676701 32646.5 3.02333 32647.5 1.63845 32648.5 1.78992 32649.5 1.6265 32650.5 1.71108 32651.5 1.94492 32652.5 1.85117 32653.5 1.207 32654.5 1.92542 32656.5 4.0766401 32657.5 2.74117 32658.5 1.74531 32659.5 2.50625 32660.5 3.5125 32661.5 2.52508 32662.5 1.79858 32663.5 2.35433 32664.5 2.1642301 32665.5 1.77842 32666.5 1.67392 32667.5 1.07867 32668.5 1.4455 32669.5 2.34 32670.5 1.94946 32671.5 1.58158 32672.5 1.9375 32673.5 1.50642 32674.5 1.53292 32675.5 2.18331 32676.5 4.17483 32677.5 3.89675 32678.5 2.00208 32679.5 2.13567 32680.5 1.48125 32681.5 2.05646 32682.5 2.25625 32683.5 1.6765 32684.5 1.77075 32685.5 2.06808 32686.5 2.17183 32687.5 1.85769 32688.5 1.86783 32689.5 2.8176701 32690.5 2.14108 32691.5 2.69733 32692.5 1.53033 32693.5 1.39954 32694.5 1.84633 32695.5 3.74125 32696.5 3.49408 32697.5 1.62433 32698.5 1.67842 32699.5 2.11438 32700.5 3.0924201 32701.5 2.3887701 32702.5 2.76142 32703.5 1.81138 32704.5 3.35438 32705.5 1.94285 32706.5 1.94877 32707.5 2.3401501 32708.5 2.11054 32709.5 1.41558 32710.5 1.15131 32711.5 1.573 32712.5 2.19154 32713.5 1.42262 32714.5 2.46523 32715.5 3.44662 32716.5 2.08642 32717.5 2.51669 32718.5 1.68569 32719.5 2.21369 32720.5 1.48969 32721.5 1.78423 32722.5 2.42392 32723.5 2.12062 32724.5 2.71623 32725.5 2.26308 32726.5 1.70838 32727.5 2.20323 32728.5 3.355 32729.5 2.73008 32730.5 1.74254 32731.5 1.76185 32732.5 1.322 32733.5 1.95854 32734.5 1.60577 32735.5 1.20792 32736.5 1.30267 32737.5 1.61785 32738.5 2.37331 32739.5 2.26969 32740.5 4.22985 32741.5 2.76569 32742.5 1.62742 32743.5 1.70607 32744.5 1.41438 32745.5 2.09092 32746.5 2.05743 32747.5 2.14577 32748.5 1.69938 32749.5 1.47136 32750.5 1.87246 32751.5 1.28943 32752.5 1.20969 32753.5 1.38262 32754.5 1.95293 32755.5 1.998 32756.5 2.48662 32757.5 4.08114 32758.5 3.51785 32759.5 2.8696401 32760.5 3.08177 32761.5 2.43031 32762.5 2.85136 32763.5 2.30946 32764.5 2.73421 32765.5 2.28831 32766.5 1.42162 32767.5 1.6485 32768.5 2.09638 32769.5 1.12 32770.5 1.99357 32771.5 2.25854 32772.5 1.53379 32773.5 3.89654 32774.5 3.33715 32775.5 3.09625 32776.5 2.69945 32777.5 1.94277 32778.5 2.34793 32779.5 2.40977 32780.5 2.28243 32781.5 1.92731 32782.5 2.9117701 32783.5 3.69964 32784.5 2.2625 32785.5 1.7062 32786.5 1.12521 32787.5 1.20929 32788.5 1.12814 32789.5 1.44633 32790.5 1.32336 32791.5 1.4445 32792.5 1.88773 32793.5 1.96771 32794.5 1.89693 32795.5 1.8025 32796.5 1.65807 32797.5 2.18114 32798.5 1.56271 32799.5 1.24693 32800.5 1.37743 32801.5 1.861 32802.5 1.02621 32803.5 1.61873 32804.5 2.06243 32805.5 1.89971 32806.5 2.75133 32807.5 2.0276401 32808.5 2.03279 32809.5 1.2115 32810.5 1.7988 32811.5 2.12521 32812.5 1.70136 32813.5 1.85267 32814.5 2.48921 32815.5 2.28264 32816.5 2.2095 32817.5 1.80947 32818.5 3.01093 32819.5 2.68029 32820.5 1.71847 32821.5 2.21636 32822.5 2.46607 32823.5 2.35967 32824.5 1.67257 32825.5 1.79 32826.5 1.99267 32827.5 3.48414 32828.5 2.0813601 32829.5 2.0931301 32830.5 2.39357 32831.5 2.054 32832.5 2.0886 32833.5 3.2795701 32834.5 2.35 32835.5 2.9102001 32836.5 3.83936 32837.5 2.00533 32838.5 1.61336 32839.5 1.97671 32840.5 1.78993 32841.5 1.88379 32842.5 1.88536 32843.5 2.7502 32844.5 2.8132901 32845.5 3.15171 32846.5 2.84087 32847.5 1.719 32848.5 1.86493 32849.5 1.83043 32850.5 2.70579 32851.5 1.99487 32852.5 1.72907 32853.5 1.86071 32854.5 3.04807 32855.5 2.51143 32856.5 1.80143 32857.5 2.228 32858.5 1.95145 32868.5 1.92425 32869.5 1.9575 32870.5 1.55814 32871.5 1.56214 32872.5 1.96569 32873.5 1.49714 32874.5 1.63571 32875.5 1.73907 32876.5 2.06879 32877.5 2.80457 32878.5 2.77686 32879.5 3.02385 32880.5 1.57957 32881.5 1.17193 32882.5 2.1630001 32883.5 1.54986 32884.5 2.06086 32885.5 1.95671 32886.5 1.62754 32887.5 2.10929