Table of
  1. T
  2. KAPLAN Indices NINO34 SST anomaly avOS
Additional Information

TimeSST anomaly
months since 1960-01-01degreeC
Jan 18560.9885809
Feb 18561.034578
Mar 18560.8456793
Apr 18560.7549809
May 18560.7511118
Jun 18560.63139
Jul 18560.5242034
Aug 18560.3629031
Sep 18560.1861163
Oct 1856-0.103025
Nov 1856-0.572917
Dec 1856-0.7973076
Jan 1857-0.7818561
Feb 1857-0.7552884
Mar 1857-0.73724
Apr 1857-0.643939
May 1857-0.6289783
Jun 1857-0.5075746
Jul 1857-0.5156711
Aug 1857-0.480305
Sep 1857-0.443182
Oct 1857-0.6150121
Nov 1857-0.5397424
Dec 1857-0.3352146
Jan 1858-0.1267157
Feb 18580.006843964
Mar 1858-0.02498841
Apr 1858-0.1634426
May 1858-0.1830987
Jun 18580.03067397
Jul 1858-0.04804266
Aug 1858-0.03042252
Sep 1858-0.05777242
Oct 1858-0.1810064
Nov 1858-0.3871242
Dec 1858-0.6078919
Jan 1859-0.6522779
Feb 1859-0.5202046
Mar 1859-0.312675
Apr 1859-0.3339222
May 1859-0.2346833
Jun 1859-0.2668698
Jul 1859-0.006175645
Aug 18590.09878906
Sep 18590.04834078
Oct 1859-0.01591848
Nov 1859-0.1665609
Dec 1859-0.1684246
Jan 1860-0.4938321
Feb 1860-0.6676264
Mar 1860-0.6850035
Apr 1860-0.6687739
May 1860-0.50041
Jun 1860-0.2566264
Jul 1860-0.3773452
Aug 1860-0.527036
Sep 1860-0.5303984
Oct 1860-0.4203531
Nov 1860-0.7271309
Dec 1860-0.6624211
Jan 1861-0.2809477
Feb 1861-0.1172438
Mar 1861-0.5409417
Apr 1861-0.5664121
May 1861-0.6595457
Jun 1861-0.5317003
Jul 1861-0.3472768
Aug 1861-0.3916583
Sep 1861-0.6004369
Oct 1861-0.6194763
Nov 1861-0.5610602
Dec 1861-0.6248506
Jan 1862-0.652432
Feb 1862-0.5576761
Mar 1862-0.465632
Apr 1862-0.2569517
May 1862-0.08018502
Jun 1862-0.2371222
Jul 1862-0.2081539
Aug 1862-0.113902
Sep 1862-0.4213849
Oct 1862-0.7745169
Nov 1862-1.21019
Dec 1862-1.115969
Jan 1863-0.861014
Feb 1863-0.775781
Mar 1863-0.8279005
Apr 1863-0.7236756
May 1863-0.7367667
Jun 1863-0.7373867
Jul 1863-0.5915548
Aug 1863-0.3753602
Sep 1863-0.4266046
Oct 1863-0.4309092
Nov 1863-0.3333285
Dec 1863-0.2673101
Jan 1864-0.3671711
Feb 1864-0.2219406
Mar 1864-0.262465
Apr 1864-0.2295535
May 1864-0.1460805
Jun 1864-0.00825522
Jul 18640.3667011
Aug 18640.7708824
Sep 18640.8482732
Oct 18640.9039015
Nov 18640.784705
Dec 18640.6762775
Jan 18650.7227621
Feb 18650.6936875
Mar 18650.616763
Apr 18650.4971711
May 18650.4262848
Jun 18650.4354859
Jul 18650.5811412
Aug 18650.5314978
Sep 18650.6029843
Oct 18650.7902054
Nov 18650.8592395
Dec 18650.9570264
Jan 18661.068735
Feb 18661.094651
Mar 18661.153942
Apr 18661.014004
May 18661.079533
Jun 18661.08066
Jul 18661.049993
Aug 18660.8580593
Sep 18660.5727817
Oct 18660.3438837
Nov 18660.2376402
Dec 1866-0.00704759
Jan 18670.131988
Feb 18670.1727352
Mar 18670.3530473
Apr 18670.4112099
May 18670.6986404
Jun 18670.913845
Jul 18670.9853109
Aug 18670.9247297
Sep 18670.8459026
Oct 18670.4878459
Nov 18670.3987039
Dec 18670.4372917
Jan 18680.4008461
Feb 18680.2971057
Mar 18680.1837919
Apr 18680.1154312
May 18680.2891828
Jun 18680.2924832
Jul 18680.3107164
Aug 18680.3786748
Sep 18680.441829
Oct 18680.7779301
Nov 18681.075139
Dec 18681.088266
Jan 18690.9590644
Feb 18690.7544845
Mar 18690.4186306
Apr 18690.1943258
May 18690.06460497
Jun 18690.05950684
Jul 1869-0.07951102
Aug 1869-0.4217577
Sep 1869-0.9665415
Oct 1869-0.8025368
Nov 1869-0.7694824
Dec 1869-0.7315993
Jan 1870-0.9342332
Feb 1870-0.8036534
Mar 1870-0.4911033
Apr 1870-0.2945754
May 1870-0.4253706
Jun 1870-0.7150795
Jul 1870-0.7615261
Aug 1870-0.6105307
Sep 1870-0.560553
Oct 1870-0.7407792
Nov 1870-0.9958033
Dec 1870-0.6991257
Jan 1871-0.5913523
Feb 1871-0.6691074
Mar 1871-0.6322592
Apr 1871-0.3756773
May 1871-0.3229119
Jun 1871-0.5027035
Jul 1871-0.1537644
Aug 1871-0.1826919
Sep 1871-0.1891278
Oct 1871-0.03103933
Nov 1871-0.06185645
Dec 1871-0.2728392
Jan 1872-0.5504481
Feb 1872-0.5932233
Mar 1872-0.5845537
Apr 1872-0.6158543
May 1872-0.5298958
Jun 1872-0.448266
Jul 1872-0.6121982
Aug 1872-0.851
Sep 1872-1.272929
Oct 1872-1.280831
Nov 1872-1.193981
Dec 1872-1.181863
Jan 1873-1.055709
Feb 1873-1.099666
Mar 1873-1.070179
Apr 1873-0.8369991
May 1873-0.4942079
Jun 1873-0.2729915
Jul 1873-0.1653007
Aug 1873-0.3632811
Sep 1873-0.3216613
Oct 1873-0.61191
Nov 1873-1.047827
Dec 1873-1.039486
Jan 1874-0.9402186
Feb 1874-1.076393
Mar 1874-0.9742374
Apr 1874-0.8939033
May 1874-0.8287678
Jun 1874-0.8099658
Jul 1874-0.8382036
Aug 1874-0.9032375
Sep 1874-1.00371
Oct 1874-1.147532
Nov 1874-1.282878
Dec 1874-0.8771676
Jan 1875-0.6456621
Feb 1875-0.7240146
Mar 1875-0.4817549
Apr 1875-0.5979096
May 1875-0.6578978
Jun 1875-0.5006659
Jul 1875-0.3322543
Aug 1875-0.7557745
Sep 1875-0.6569865
Oct 1875-0.8069032
Nov 1875-0.6319299
Dec 1875-0.3868833
Jan 1876-0.6945902
Feb 1876-0.6895001
Mar 1876-0.7453879
Apr 1876-0.7263556
May 1876-0.2649311
Jun 1876-0.2526375
Jul 1876-0.1341729
Aug 1876-0.1879855
Sep 1876-0.2282299
Oct 18760.1338242
Nov 18760.3200728
Dec 18760.3829679
Jan 18770.5838117
Feb 18770.6709916
Mar 18770.8702533
Apr 18771.176468
May 18771.209396
Jun 18771.614134
Jul 18771.823972
Aug 18771.961508
Sep 18772.072647
Oct 18771.920007
Nov 18772.055289
Dec 18772.138231
Jan 18782.240988
Feb 18782.205715
Mar 18781.777547
Apr 18781.408509
May 18781.3346
Jun 18781.29686
Jul 18780.994072
Aug 18780.3403594
Sep 18780.01715993
Oct 1878-0.2941763
Nov 1878-0.2468878
Dec 1878-0.2358405
Jan 1879-0.02953083
Feb 18790.2190602
Mar 18790.02491153
Apr 18790.0251076
May 1879-0.1722748
Jun 1879-0.2291691
Jul 1879-0.2739531
Aug 1879-0.7326979
Sep 1879-0.849182
Oct 1879-0.9649355
Nov 1879-0.9793716
Dec 1879-1.144421
Jan 1880-1.253372
Feb 1880-0.4445719
Mar 1880-0.08322579
Apr 1880-0.06998505
May 1880-0.1123811
Jun 1880-0.3045765
Jul 1880-0.2603559
Aug 1880-0.1252318
Sep 18800.08454728
Oct 18800.2733615
Nov 18800.3075441
Dec 18800.5901546
Jan 18810.7251693
Feb 18810.5587026
Mar 18810.5922793
Apr 18810.5760164
May 18810.5957482
Jun 18810.4412687
Jul 18810.2980221
Aug 18810.2776347
Sep 18810.1338503
Oct 1881-0.03135515
Nov 1881-0.3317807
Dec 1881-0.5366989
Jan 1882-0.5158973
Feb 1882-0.4006083
Mar 1882-0.2003889
Apr 18820.01971584
May 18820.1349889
Jun 1882-0.2965462
Jul 1882-0.3724837
Aug 1882-0.3279344
Sep 1882-0.2779899
Oct 1882-0.6512781
Nov 1882-0.7599614
Dec 1882-0.5605587
Jan 1883-0.3899389
Feb 1883-0.1282482
Mar 18830.06950632
Apr 18830.224031
May 18830.1297864
Jun 18830.2483044
Jul 18830.3129304
Aug 18830.4612652
Sep 18830.1251716
Oct 1883-0.1141403
Nov 18830.002733993
Dec 1883-0.07222041
Jan 18840.05233113
Feb 1884-0.004322916
Mar 1884-0.04192199
Apr 18840.2007776
May 18840.4356278
Jun 18840.02672721
Jul 18840.2319972
Aug 18840.365524
Sep 18840.4576035
Oct 18840.6199928
Nov 18840.7042606
Dec 18840.6461
Jan 18850.6990358
Feb 18850.5561745
Mar 18850.7501362
Apr 18850.8060926
May 18850.681933
Jun 18850.7374957
Jul 18850.6939584
Aug 18850.8988017
Sep 18851.066692
Oct 18851.183044
Nov 18851.236086
Dec 18851.027448
Jan 18860.5520205
Feb 18860.05818715
Mar 18860.13075
Apr 18860.1649311
May 1886-0.2597734
Jun 1886-0.8576495
Jul 1886-0.8301536
Aug 1886-0.9092209
Sep 1886-0.6927534
Oct 1886-1.056889
Nov 1886-1.157234
Dec 1886-1.388142
Jan 1887-1.068406
Feb 1887-0.9260389
Mar 1887-0.7788624
Apr 1887-0.8138355
May 1887-0.4553855
Jun 1887-0.3477255
Jul 1887-0.06681606
Aug 1887-0.2511487
Sep 1887-0.07078666
Oct 1887-0.06877754
Nov 18870.00875368
Dec 18870.2097577
Jan 18880.5808128
Feb 18880.8680056
Mar 18880.9303845
Apr 18880.690265
May 18880.6590507
Jun 18880.8668942
Jul 18880.992525
Aug 18880.97453
Sep 18881.319201
Oct 18881.662271
Nov 18881.926972
Dec 18881.911191
Jan 18891.992883
Feb 18891.647526
Mar 18891.401041
Apr 18891.050115
May 18890.877245
Jun 18890.3559758
Jul 1889-0.2374918
Aug 1889-0.7984148
Sep 1889-0.8415154
Oct 1889-1.191806
Nov 1889-1.369018
Dec 1889-1.36062
Jan 1890-1.698193
Feb 1890-1.104476
Mar 1890-0.9210137
Apr 1890-0.7007082
May 1890-0.7223176
Jun 1890-0.7344566
Jul 1890-0.6996911
Aug 1890-0.8261091
Sep 1890-0.9279529
Oct 1890-1.131561
Nov 1890-0.8963041
Dec 1890-0.2717403
Jan 18910.059954
Feb 18910.1477108
Mar 18910.07956067
Apr 18910.365546
May 18910.568402
Jun 18910.5723529
Jul 18910.4348091
Aug 18910.3421507
Sep 18910.187022
Oct 18910.2090634
Nov 18910.16014
Dec 18910.05437705
Jan 18920.132583
Feb 18920.02562035
Mar 1892-0.2184839
Apr 1892-0.371749
May 1892-0.3702542
Jun 1892-0.3838961
Jul 1892-0.6463498
Aug 1892-0.9927941
Sep 1892-1.289237
Oct 1892-1.759216
Nov 1892-1.709759
Dec 1892-1.423674
Jan 1893-1.378827
Feb 1893-1.483348
Mar 1893-1.174479
Apr 1893-1.085802
May 1893-1.09472
Jun 1893-1.068787
Jul 1893-0.9376613
Aug 1893-1.094911
Sep 1893-1.218703
Oct 1893-1.38925
Nov 1893-1.31551
Dec 1893-1.166306
Jan 1894-1.221282
Feb 1894-1.133839
Mar 1894-1.159076
Apr 1894-1.049964
May 1894-0.9580752
Jun 1894-0.6652158
Jul 1894-0.3410223
Aug 1894-0.6416008
Sep 1894-0.542349
Oct 1894-0.3675704
Nov 1894-0.08408757
Dec 1894-0.1366043
Jan 1895-0.1871339
Feb 1895-0.2524352
Mar 1895-0.09534856
Apr 1895-0.00226178
May 1895-0.052134
Jun 1895-0.1689397
Jul 1895-0.1711027
Aug 18950.02789143
Sep 18950.2649515
Oct 18950.2272931
Nov 18950.4921831
Dec 18950.3671795
Jan 18960.2523697
Feb 18960.3496706
Mar 18960.2362171
Apr 18960.3235285
May 18960.1637124
Jun 18960.346302
Jul 18960.6989005
Aug 18961.143741
Sep 18961.087431
Oct 18961.283571
Nov 18961.59909
Dec 18961.906649
Jan 18971.748674
Feb 18971.282519
Mar 18970.7978495
Apr 18970.2179841
May 18970.04567386
Jun 18970.149172
Jul 18970.1302886
Aug 1897-0.14696
Sep 1897-0.1459279
Oct 1897-0.5128578
Nov 1897-0.7214659
Dec 1897-0.4439531
Jan 1898-0.3949394
Feb 1898-0.4994084
Mar 1898-0.5146296
Apr 1898-0.2414459
May 1898-0.2613919
Jun 1898-0.1551197
Jul 1898-0.3224724
Aug 1898-0.3817431
Sep 1898-0.3767692
Oct 1898-0.4682939
Nov 1898-0.6515392
Dec 1898-0.8515073
Jan 1899-0.719419
Feb 1899-0.5068288
Mar 1899-0.3099577
Apr 1899-0.004631702
May 18990.3172348
Jun 18990.2662889
Jul 18990.5629485
Aug 18990.8805924
Sep 18990.9465562
Oct 18991.250258
Nov 18991.486166
Dec 18991.565482
Jan 19001.410939
Feb 19001.300821
Mar 19000.9630951
Apr 19000.9706327
May 19000.9347317
Jun 19000.7862167
Jul 19000.6756808
Aug 19000.6169718
Sep 19000.625356
Oct 19000.5647988
Nov 19000.4011555
Dec 19000.6970055
Jan 19010.6681314
Feb 19010.3277922
Mar 19010.03774923
Apr 19010.117286
May 1901-0.07604674
Jun 1901-0.09946432
Jul 1901-0.1883534
Aug 1901-0.1482817
Sep 1901-0.09533468
Oct 1901-0.1736729
Nov 1901-0.2833182
Dec 1901-0.3113083
Jan 1902-0.02171089
Feb 19020.2659742
Mar 19020.4599616
Apr 19020.614115
May 19020.8695487
Jun 19021.032752
Jul 19021.680093
Aug 19021.719996
Sep 19021.762753
Oct 19021.807206
Nov 19021.962042
Dec 19021.919083
Jan 19031.647486
Feb 19031.398196
Mar 19031.108321
Apr 19030.7981353
May 19030.4160462
Jun 19030.2105669
Jul 1903-0.06232299
Aug 1903-0.1835971
Sep 1903-0.3845437
Oct 1903-0.4039792
Nov 1903-0.711543
Dec 1903-0.9779868
Jan 1904-0.8283523
Feb 1904-0.724124
Mar 1904-0.4240163
Apr 1904-0.09933512
May 19040.1621543
Jun 19040.3423775
Jul 19040.4355416
Aug 19040.5183771
Sep 19040.4253926
Oct 19040.6977958
Nov 19040.8265714
Dec 19041.116665
Jan 19051.310742
Feb 19051.284853
Mar 19051.371343
Apr 19051.255439
May 19051.41806
Jun 19051.390127
Jul 19051.439694
Aug 19051.499096
Sep 19051.759613
Oct 19051.600878
Nov 19051.564974
Dec 19051.605913
Jan 19061.347078
Feb 19060.9308369
Mar 19060.7739256
Apr 19060.7427914
May 19060.3338512
Jun 19060.4752429
Jul 19060.3222963
Aug 1906-0.1502607
Sep 1906-0.2054637
Oct 1906-0.5085142
Nov 1906-0.5438043
Dec 1906-0.3722396
Jan 1907-0.4167565
Feb 1907-0.3866585
Mar 1907-0.2558951
Apr 19070.08734086
May 19070.4347569
Jun 19070.6612207
Jul 19070.6619156
Aug 19070.4517569
Sep 19070.343869
Oct 19070.07503194
Nov 1907-0.288029
Dec 19070.06674106
Jan 19080.03035882
Feb 19080.1365742
Mar 1908-0.5344998
Apr 1908-0.5101271
May 1908-0.3310872
Jun 1908-0.3575733
Jul 1908-0.6102855
Aug 1908-0.2682617
Sep 1908-0.4237842
Oct 1908-0.6066162
Nov 1908-0.875718
Dec 1908-0.9343777
Jan 1909-0.747117
Feb 1909-0.638415
Mar 1909-0.6816963
Apr 1909-0.3233863
May 1909-0.1936778
Jun 1909-0.2891956
Jul 1909-0.1869531
Aug 1909-0.04812963
Sep 1909-0.4942219
Oct 1909-0.988552
Nov 1909-1.269231
Dec 1909-1.101893
Jan 1910-1.030885
Feb 1910-1.295015
Mar 1910-1.149159
Apr 1910-1.285271
May 1910-1.164879
Jun 1910-0.8975772
Jul 1910-0.7912652
Aug 1910-0.9918918
Sep 1910-0.8109328
Oct 1910-0.7665437
Nov 1910-0.8841613
Dec 1910-0.7599459
Jan 1911-0.6143783
Feb 1911-0.7838966
Mar 1911-0.6864439
Apr 1911-0.5834938
May 1911-0.314075
Jun 1911-0.1428771
Jul 19110.0269319
Aug 19110.1558924
Sep 19110.4429588
Oct 19110.6942658
Nov 19111.000238
Dec 19111.060197
Jan 19121.168863
Feb 19121.124514
Mar 19120.8112687
Apr 19120.8459634
May 19120.6783468
Jun 19120.426215
Jul 19120.0779765
Aug 1912-0.07549754
Sep 1912-0.09886593
Oct 19120.04561316
Nov 19120.160568
Dec 19120.02698323
Jan 19130.1000697
Feb 19130.2189679
Mar 1913-0.07026598
Apr 1913-0.07704294
May 19130.08957637
Jun 19130.1880586
Jul 19130.2703351
Aug 19130.380406
Sep 19130.3753714
Oct 19130.5284352
Nov 19130.8733017
Dec 19131.020984
Jan 19141.075423
Feb 19140.9243987
Mar 19140.7905533
Apr 19141.181149
May 19141.112186
Jun 19140.942228
Jul 19140.9630822
Aug 19141.172969
Sep 19141.15071
Oct 19141.204235
Nov 19141.225482
Dec 19141.31613
Jan 19151.398422
Feb 19151.381963
Mar 19151.348618
Apr 19151.126421
May 19151.255674
Jun 19151.233851
Jul 19151.218247
Aug 19150.7839077
Sep 19150.4274983
Oct 19150.2967019
Nov 19150.1642112
Dec 1915-0.1622605
Jan 1916-0.3306984
Feb 1916-0.3918379
Mar 1916-0.4958278
Apr 1916-0.4600422
May 1916-0.4794361
Jun 1916-0.4889105
Jul 1916-0.609509
Aug 1916-0.8667024
Sep 1916-1.028068
Oct 1916-1.078837
Nov 1916-1.202582
Dec 1916-1.385411
Jan 1917-1.466846
Feb 1917-1.134925
Mar 1917-1.15337
Apr 1917-0.6489062
May 1917-0.2517752
Jun 19170.06475838
Jul 19170.07338073
Aug 1917-0.2755376
Sep 1917-0.4995361
Oct 1917-0.8326248
Nov 1917-0.9557082
Dec 1917-1.084292
Jan 1918-1.052032
Feb 1918-0.8088266
Mar 1918-0.4186009
Apr 1918-0.09385732
May 19180.1835545
Jun 19180.4172353
Jul 19180.6514443
Aug 19180.6787346
Sep 19180.995016
Oct 19181.339111
Nov 19181.39886
Dec 19181.43603
Jan 19191.479258
Feb 19191.416033
Mar 19191.282995
Apr 19191.062277
May 19190.7207147
Jun 19190.6225078
Jul 19190.5922076
Aug 19190.5234274
Sep 19190.6297288
Oct 19190.4200043
Nov 19190.5688112
Dec 19190.8632459
Jan 19200.8682842
Feb 19200.9118866
Mar 19200.8197665
Apr 19200.9406564
May 19200.8944166
Jun 19201.026987
Jul 19200.8660611
Aug 19200.5893873
Sep 19200.3232548
Oct 19200.1101179
Nov 1920-0.1791236
Dec 1920-0.5061683
Jan 1921-0.3866722
Feb 1921-0.9831324
Mar 1921-1.874727
Apr 1921-0.7151971
May 1921-0.3749543
Jun 1921-0.2118798
Jul 1921-0.07676104
Aug 19210.1391187
Sep 19210.08939899
Oct 19210.02303775
Nov 1921-0.2581851
Dec 1921-0.09293573
Jan 1922-0.1712634
Feb 19220.2815025
Mar 19220.3041871
Apr 19220.007833918
May 19220.251667
Jun 19220.07908786
Jul 1922-0.2467382
Aug 1922-0.7341251
Sep 1922-0.2965937
Oct 1922-0.3725243
Nov 1922-0.1685895
Dec 1922-0.3147592
Jan 1923-0.5575242
Feb 1923-0.4716414
Mar 1923-0.04960068
Apr 19230.2113179
May 19230.37911
Jun 19230.380501
Jul 19230.3043174
Aug 19230.9303677
Sep 19230.8016446
Oct 19230.6862173
Nov 19230.8131102
Dec 19230.8909378
Jan 19240.7960942
Feb 19240.8875556
Mar 19240.6063474
Apr 19240.2551681
May 1924-0.2917754
Jun 1924-0.1980401
Jul 1924-0.2321191
Aug 1924-0.3701866
Sep 1924-0.539846
Oct 1924-0.7891999
Nov 1924-1.229283
Dec 1924-0.835104
Jan 1925-1.268679
Feb 1925-0.8917952
Mar 1925-0.5594532
Apr 1925-0.1725282
May 1925-0.286641
Jun 1925-0.1273692
Jul 19250.3089925
Aug 19250.7322549
Sep 19250.6352204
Oct 19250.6947902
Nov 19251.265174
Dec 19251.610659
Jan 19261.420103
Feb 19261.118545
Mar 19261.113865
Apr 19260.8629652
May 19260.5383134
Jun 19260.4788814
Jul 19260.7124717
Aug 19260.534162
Sep 19260.08186048
Oct 1926-0.1178836
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Apr 1988-0.02651513
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Feb 19900.246475
Mar 19900.07257736
Apr 19900.1749032
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Nov 19900.3590369
Dec 19900.6213132
Jan 19910.5928187
Feb 19910.4014809
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Apr 19910.5671903
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Jul 19911.090136
Aug 19910.835548
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Nov 19911.367425
Dec 19911.752473