YEAR MONTH MEAN STDEV COUNT 2002 1 nan nan 0 2002 2 nan nan 0 2002 3 nan nan 0 2002 4 nan nan 0 2002 5 nan nan 0 2002 6 nan nan 0 2002 7 2.46109e+00 5.45799e-01 18 2002 8 2.63564e+00 5.10216e-01 24 2002 9 1.67271e+00 2.38633e-01 9 2002 10 2.04748e+00 3.05113e-01 55 2002 11 2.02752e+00 4.61333e-01 21 2002 12 1.64227e+00 3.39100e-01 38 2003 1 1.38762e+00 3.79164e-01 48 2003 2 1.61311e+00 2.93575e-01 27 2003 3 2.75035e+00 2.30315e-01 13 2003 4 2.65788e+00 8.11186e-01 25 2003 5 nan nan 0 2003 6 nan nan 0 2003 7 1.90197e+00 1.55109e-01 14 2003 8 1.49383e+00 1.55150e-01 2 2003 9 1.97035e+00 2.05841e-01 17 2003 10 1.34732e+00 1.42937e-01 35 2003 11 2.01487e+00 6.37787e-01 41 2003 12 1.22377e+00 3.46958e-01 46 2004 1 1.07324e+00 1.82640e-01 21 2004 2 1.86262e+00 1.51445e-01 16 2004 3 2.68735e+00 4.18716e-01 14 2004 4 2.33062e+00 8.87087e-01 17 2004 5 2.70673e+00 4.50441e-01 14 2004 6 2.91537e+00 2.41186e-01 12 2004 7 2.41233e+00 4.67375e-01 12 2004 8 1.69349e+00 2.05757e-01 16 2004 9 1.36447e+00 8.70221e-02 3 2004 10 1.03575e+00 2.31314e-01 31 2004 11 1.23379e+00 2.29162e-01 38 2004 12 1.18313e+00 3.56138e-01 38 2005 1 1.57671e+00 3.50570e-01 4 2005 2 1.26052e+00 2.25408e-01 40 2005 3 1.25901e+00 1.77140e-01 20 2005 4 2.07522e+00 7.31096e-01 28 2005 5 3.22711e+00 1.13274e+00 3 2005 6 2.52604e+00 6.81533e-01 4 2005 7 1.28394e+00 1.66787e-01 13 2005 8 1.62041e+00 2.86049e-01 41 2005 9 1.56536e+00 1.27747e-01 11 2005 10 1.69394e+00 5.45373e-01 14 2005 11 1.42372e+00 3.06770e-01 39 2005 12 1.68604e+00 2.92346e-01 21 2006 1 1.10971e+00 2.65740e-01 24 2006 2 1.22016e+00 2.92543e-01 47 2006 3 2.10157e+00 4.44228e-01 65 2006 4 2.09123e+00 1.98399e-01 6 2006 5 3.43277e+00 6.83098e-01 21 2006 6 2.69385e+00 6.15735e-01 32 2006 7 nan nan 0 2006 8 2.24095e+00 5.92871e-01 12 2006 9 1.30198e+00 3.00099e-01 15 2006 10 1.65660e+00 3.56073e-01 49 2006 11 1.30053e+00 3.23350e-01 29 2006 12 2.22416e+00 5.10067e-02 12 2007 1 1.71817e+00 3.58050e-01 36 2007 2 2.34144e+00 4.53637e-01 41 2007 3 3.01216e+00 4.26968e-01 18 2007 4 3.51434e+00 6.66605e-01 6 2007 5 1.67751e+00 0.00000e+00 3 2007 6 3.19409e+00 7.87390e-01 12 2007 7 nan nan 0 2007 8 2.63385e+00 0.00000e+00 1 2007 9 nan nan 0 2007 10 2.54322e+00 4.57519e-01 23 2007 11 1.78748e+00 4.20788e-01 18 2007 12 2.00366e+00 4.64448e-01 51 2008 1 1.59403e+00 4.86468e-01 34 2008 2 2.64062e+00 6.45984e-01 39 2008 3 2.73681e+00 3.62299e-01 14 2008 4 2.41218e+00 6.32978e-01 21 2008 5 1.90734e+00 5.21346e-01 19 2008 6 1.78868e+00 4.67176e-01 20 2008 7 2.58343e+00 2.41761e-01 29 2008 8 2.37818e+00 1.15018e-01 13 2008 9 2.12994e+00 3.84514e-01 18 2008 10 1.72256e+00 3.96790e-01 43 2008 11 1.85373e+00 5.14555e-01 47 2008 12 1.47220e+00 4.74046e-01 37 2009 1 1.83626e+00 5.83033e-01 44 2009 2 2.13825e+00 1.25163e+00 7 2009 3 2.18267e+00 5.79217e-01 46 2009 4 2.60605e+00 7.39600e-01 19 2009 5 3.27357e+00 0.00000e+00 2 2009 6 2.13218e+00 2.76717e-01 10 2009 7 2.06699e+00 1.85331e-01 19 2009 8 2.10722e+00 3.01298e-01 40 2009 9 1.76292e+00 0.00000e+00 1 2009 10 1.64457e+00 3.68947e-01 14 2009 11 1.51073e+00 3.84897e-01 30 2009 12 nan nan 0 2010 1 1.42847e+00 1.68583e-01 61 2010 2 2.04489e+00 4.38028e-01 26 2010 3 1.12409e+00 2.00714e-01 15 2010 4 2.14284e+00 8.89485e-01 42 2010 5 2.05426e+00 0.00000e+00 2 2010 6 3.20096e+00 1.30766e+00 20 2010 7 nan nan 0 2010 8 1.62372e+00 2.19124e-01 3 2010 9 1.78524e+00 3.12324e-01 37 2010 10 1.95156e+00 5.05563e-01 108 2010 11 2.05365e+00 3.94467e-01 67 2010 12 7.99989e-01 2.56393e-01 7 2011 1 1.10560e+00 3.94173e-01 21 2011 2 1.99791e+00 7.88239e-01 67 2011 3 2.51559e+00 4.87691e-01 38 2011 4 2.14787e+00 2.57132e-01 17 2011 5 1.81474e+00 7.98853e-01 13 2011 6 2.35705e+00 8.31831e-01 39 2011 7 2.19384e+00 4.90473e-01 30 2011 8 2.18495e+00 5.32470e-01 10 2011 9 1.75052e+00 5.39402e-01 59 2011 10 2.05478e+00 4.52029e-01 47 2011 11 1.82757e+00 3.62478e-01 29 2011 12 1.92124e+00 8.06117e-01 57 2012 1 1.82019e+00 1.39985e-02 4 2012 2 2.26042e+00 7.59293e-01 33 2012 3 2.98138e+00 6.84287e-01 32 2012 4 2.69425e+00 7.95570e-01 28 2012 5 3.61767e+00 7.24849e-01 4 2012 6 nan nan 0 2012 7 1.82751e+00 4.55743e-01 7 2012 8 2.17567e+00 2.76962e-02 4 2012 9 2.04124e+00 2.18887e-01 38 2012 10 1.90867e+00 1.35346e-01 12 2012 11 1.86100e+00 2.40823e-01 36 2012 12 2.06345e+00 2.83986e-01 32 2013 1 1.63342e+00 9.38148e-02 12 2013 2 1.90504e+00 6.79296e-01 57 2013 3 1.97862e+00 5.85627e-01 34 2013 4 2.77550e+00 7.76443e-01 21 2013 5 2.76582e+00 2.81141e-01 6 2013 6 nan nan 0 2013 7 1.85268e+00 2.46707e-01 14 2013 8 1.70591e+00 5.59521e-02 10 2013 9 1.82184e+00 4.28269e-01 17 2013 10 2.12544e+00 5.91392e-01 104 2013 11 1.44931e+00 2.99403e-01 9 2013 12 1.65626e+00 3.14766e-01 42 2014 1 1.29765e+00 3.44036e-01 10 2014 2 1.72233e+00 5.15037e-01 25 2014 3 1.92011e+00 7.49276e-01 76 2014 4 3.06408e+00 7.10523e-01 24 2014 5 2.73050e+00 7.33032e-01 59 2014 6 2.48039e+00 4.98672e-01 35 2014 7 nan nan 0 2014 8 2.08968e+00 6.35313e-01 61 2014 9 1.91186e+00 3.19493e-01 24 2014 10 1.89430e+00 5.98027e-01 74 2014 11 1.62585e+00 2.96225e-01 19 2014 12 2.38175e+00 4.75491e-01 26 2015 1 1.47699e+00 6.29290e-01 41 2015 2 1.20023e+00 5.39172e-01 4 2015 3 2.07298e+00 2.87268e-01 34 2015 4 3.71593e+00 1.16182e+00 24 2015 5 2.01306e+00 4.91246e-01 24 2015 6 3.17882e+00 6.92104e-01 13 2015 7 nan nan 0 2015 8 1.28462e+00 2.89305e-01 40 2015 9 1.91130e+00 1.82334e-01 7 2015 10 1.92387e+00 6.44286e-02 11 2015 11 1.72730e+00 3.91614e-01 38 2015 12 2.27608e+00 2.97896e-01 13 2016 1 1.12187e+00 7.89265e-02 18 2016 2 1.04104e+00 4.88567e-01 33 2016 3 1.02824e+00 5.79087e-02 4 2016 4 1.99481e+00 5.40681e-01 18 2016 5 3.78619e+00 6.64231e-01 29 2016 6 2.22090e+00 4.48799e-01 22 2016 7 1.86777e+00 4.67382e-01 20 2016 8 2.09671e+00 7.09859e-01 11 2016 9 1.82758e+00 5.18413e-01 16 2016 10 2.22219e+00 5.08628e-01 45 2016 11 2.07592e+00 3.94041e-01 39 2016 12 2.66035e+00 4.94962e-01 45 2017 1 2.06207e+00 7.03279e-01 15 2017 2 2.01285e+00 4.92472e-01 33 2017 3 2.12577e+00 3.92695e-01 30 2017 4 2.20748e+00 7.42634e-01 46 2017 5 2.66374e+00 0.00000e+00 1 2017 6 2.42912e+00 8.25847e-01 9 2017 7 2.35084e+00 1.92780e-01 5 2017 8 1.13632e+00 4.16841e-01 16 2017 9 1.49447e+00 5.14616e-01 41 2017 10 1.27720e+00 4.30029e-01 31 2017 11 2.33060e+00 4.80652e-01 43 2017 12 1.62236e+00 2.22082e-01 20 2018 1 2.03770e+00 6.22120e-02 3 2018 2 1.85435e+00 1.80883e-01 17 2018 3 1.47368e+00 4.96789e-01 31 2018 4 2.58495e+00 1.04895e+00 29 2018 5 3.05538e+00 8.52234e-01 31 2018 6 2.21704e+00 5.61451e-01 17 2018 7 2.12746e+00 2.75768e-01 3 2018 8 1.72232e+00 2.69303e-01 50 2018 9 1.45891e+00 4.59673e-01 15 2018 10 1.50197e+00 2.43112e-01 35 2018 11 1.34895e+00 6.92329e-02 14 2018 12 1.63105e+00 3.28119e-01 15 2019 1 7.03820e-01 1.16693e-01 2 2019 2 1.46695e+00 5.15907e-01 55 2019 3 2.41353e+00 6.90992e-01 71 2019 4 1.64115e+00 4.74533e-01 10 2019 5 2.78590e+00 5.21150e-01 18 2019 6 1.91067e+00 3.16719e-02 7 2019 7 3.06083e+00 2.37518e-01 16 2019 8 1.06004e+00 1.39464e-01 15 2019 9 1.99097e+00 6.91222e-01 26 2019 10 2.21246e+00 4.58322e-01 14 2019 11 2.00521e+00 6.00991e-01 47 2019 12 1.57457e+00 5.58215e-02 3 2020 1 1.30494e+00 2.10162e-01 18 2020 2 1.21701e+00 8.17564e-01 25 2020 3 1.34124e+00 8.77316e-01 11 2020 4 1.81221e+00 1.76156e-01 5 2020 5 3.62436e+00 8.68022e-01 13 2020 6 2.56131e+00 6.18693e-01 37 2020 7 1.68976e+00 1.18725e-01 20 2020 8 nan nan 0 2020 9 nan nan 0 2020 10 1.57824e+00 8.34436e-02 7 2020 11 1.54363e+00 3.06727e-01 35 2020 12 1.52117e+00 2.49842e-01 28 2021 1 1.76994e+00 7.02476e-01 29 2021 2 1.31711e+00 3.67114e-01 11 2021 3 1.24268e+00 7.22635e-02 4 2021 4 2.61708e+00 7.37166e-01 10 2021 5 2.57318e+00 5.94007e-01 35 2021 6 nan nan 0 2021 7 2.07625e+00 6.10583e-01 8 2021 8 1.75339e+00 4.71263e-01 18 2021 9 1.80119e+00 5.75095e-01 45 2021 10 1.89826e+00 2.42848e-01 58 2021 11 2.27723e+00 2.61038e-01 22 2021 12 1.92420e+00 3.10917e-01 42 2022 1 1.06686e+00 2.74911e-01 30 2022 2 2.15926e+00 1.06083e+00 39 2022 3 2.18825e+00 1.08990e+00 35 2022 4 3.05490e+00 1.10464e+00 3 2022 5 2.38546e+00 7.02367e-01 9 2022 6 2.63385e+00 0.00000e+00 1 2022 7 1.56146e+00 0.00000e+00 1 2022 8 2.64915e+00 3.59901e-01 22 2022 9 1.93916e+00 3.67833e-01 18 2022 10 2.04297e+00 5.47254e-01 107 2022 11 1.69997e+00 4.66244e-01 43 2022 12 1.77649e+00 3.45275e-01 46 2023 1 1.87542e+00 5.20875e-01 130 2023 2 2.18306e+00 5.87607e-01 89 2023 3 2.35248e+00 5.77137e-01 185 2023 4 3.00599e+00 7.41502e-01 7 2023 5 2.52828e+00 1.04867e+00 35 2023 6 2.48061e+00 4.28283e-01 36 2023 7 2.18641e+00 6.13290e-01 54 2023 8 2.56079e+00 6.20637e-01 31 2023 9 2.11057e+00 5.20703e-01 68 2023 10 2.54354e+00 4.40104e-01 71 2023 11 2.03324e+00 3.92299e-01 73 2023 12 1.08559e+00 2.71364e-01 56 2024 1 1.28705e+00 7.76479e-02 20 2024 2 1.95718e+00 8.68969e-01 77 2024 3 2.73649e+00 9.92654e-01 98 2024 4 nan nan 0