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 6.26237e+01 2.59703e-01 32 2002 8 5.71925e+01 5.71489e-01 26 2002 9 4.90393e+01 1.88458e-03 3 2002 10 4.29508e+01 1.96549e+00 80 2002 11 3.34108e+01 2.34496e+00 152 2002 12 2.89019e+01 4.40911e-01 149 2003 1 3.07875e+01 1.55311e+00 203 2003 2 3.82271e+01 2.31591e+00 131 2003 3 4.65420e+01 3.81470e-06 3 2003 4 5.59291e+01 2.01088e+00 66 2003 5 6.14009e+01 1.14586e+00 44 2003 6 6.31599e+01 7.68678e-02 33 2003 7 6.10761e+01 2.05753e-03 16 2003 8 5.82142e+01 3.07203e-03 8 2003 9 5.12623e+01 1.18040e+00 23 2003 10 4.10174e+01 2.59065e+00 157 2003 11 3.27200e+01 1.79565e+00 176 2003 12 2.87692e+01 4.56726e-01 129 2004 1 3.11549e+01 1.68469e+00 100 2004 2 4.02279e+01 2.30133e+00 80 2004 3 4.81368e+01 1.52822e+00 93 2004 4 5.66492e+01 1.97766e+00 97 2004 5 6.12368e+01 8.90154e-01 87 2004 6 6.31208e+01 5.28579e-03 16 2004 7 6.24965e+01 4.12005e-02 32 2004 8 5.83145e+01 1.83112e+00 80 2004 9 4.99355e+01 2.16433e+00 37 2004 10 4.11599e+01 2.26908e+00 82 2004 11 3.32564e+01 1.90957e+00 99 2004 12 2.86403e+01 1.36345e-01 114 2005 1 3.17745e+01 1.47427e+00 140 2005 2 3.83954e+01 1.62095e+00 80 2005 3 4.76427e+01 2.83442e+00 172 2005 4 5.52239e+01 1.11791e+00 64 2005 5 6.23868e+01 4.87211e-01 34 2005 6 6.32388e+01 9.93795e-02 58 2005 7 6.23266e+01 8.50632e-02 31 2005 8 nan nan 0 2005 9 4.93905e+01 3.11207e+00 29 2005 10 4.10709e+01 2.60735e+00 116 2005 11 3.32041e+01 1.81825e+00 170 2005 12 2.87582e+01 4.60837e-01 104 2006 1 3.15670e+01 1.90125e+00 128 2006 2 3.87065e+01 2.66062e+00 148 2006 3 4.86823e+01 2.66555e+00 154 2006 4 5.68006e+01 1.82971e+00 81 2006 5 6.13872e+01 9.43277e-01 100 2006 6 6.31954e+01 2.52887e-01 56 2006 7 6.17716e+01 5.30808e-01 20 2006 8 5.79967e+01 2.21282e+00 54 2006 9 4.95104e+01 2.80892e+00 80 2006 10 4.05785e+01 2.66040e+00 104 2006 11 3.28490e+01 2.03725e+00 157 2006 12 2.90537e+01 5.60086e-01 86 2007 1 3.17212e+01 1.56180e+00 82 2007 2 3.83228e+01 1.82524e+00 133 2007 3 4.76520e+01 2.35307e+00 218 2007 4 5.69658e+01 2.05825e+00 110 2007 5 6.07909e+01 7.46082e-01 70 2007 6 6.30284e+01 8.74195e-02 38 2007 7 6.23346e+01 3.04451e-01 44 2007 8 5.76981e+01 2.14038e+00 32 2007 9 4.92882e+01 1.31901e+00 26 2007 10 4.20983e+01 1.97644e+00 70 2007 11 3.34805e+01 1.92468e+00 217 2007 12 2.88343e+01 8.14595e-02 78 2008 1 3.10964e+01 1.94987e+00 175 2008 2 3.85907e+01 3.10559e+00 221 2008 3 4.92088e+01 2.89083e+00 122 2008 4 5.73595e+01 1.24322e+00 86 2008 5 6.13155e+01 1.02256e+00 50 2008 6 6.30909e+01 1.55384e-01 77 2008 7 6.28018e+01 1.04132e-02 16 2008 8 nan nan 0 2008 9 5.01393e+01 1.99165e+00 63 2008 10 4.05840e+01 3.26225e+00 146 2008 11 3.35422e+01 1.88665e+00 231 2008 12 2.88995e+01 4.78972e-01 132 2009 1 3.10109e+01 1.75812e+00 161 2009 2 3.86405e+01 2.56503e+00 178 2009 3 4.68817e+01 2.13225e+00 146 2009 4 5.78344e+01 1.16251e-02 11 2009 5 6.14289e+01 1.05843e+00 42 2009 6 6.32019e+01 1.14221e-02 21 2009 7 6.26846e+01 4.16629e-03 16 2009 8 5.85216e+01 1.53468e+00 50 2009 9 5.11960e+01 1.14741e+00 55 2009 10 4.12054e+01 2.76838e+00 108 2009 11 3.33936e+01 1.23626e+00 81 2009 12 2.87969e+01 2.78995e-01 44 2010 1 3.11562e+01 1.70050e+00 128 2010 2 3.91871e+01 2.41263e+00 118 2010 3 4.72466e+01 3.07063e+00 128 2010 4 5.70029e+01 1.66990e+00 89 2010 5 6.13628e+01 6.80690e-01 64 2010 6 6.30455e+01 1.67307e-01 75 2010 7 6.16697e+01 9.15189e-01 45 2010 8 5.95944e+01 3.75662e-01 9 2010 9 4.99611e+01 2.17442e+00 146 2010 10 4.16373e+01 2.43582e+00 250 2010 11 3.31962e+01 1.85335e+00 222 2010 12 2.91668e+01 5.32575e-01 176 2011 1 3.12257e+01 1.59745e+00 166 2011 2 4.03616e+01 1.79529e+00 174 2011 3 4.86264e+01 2.02398e+00 132 2011 4 5.52872e+01 1.69550e+00 95 2011 5 6.17126e+01 7.24513e-01 102 2011 6 6.32698e+01 1.42523e-01 45 2011 7 6.20868e+01 6.43947e-01 32 2011 8 5.75691e+01 1.45971e+00 73 2011 9 5.12493e+01 2.36676e+00 120 2011 10 4.16500e+01 2.79150e+00 229 2011 11 3.35499e+01 1.86503e+00 176 2011 12 2.90734e+01 5.75070e-01 156 2012 1 3.09271e+01 1.82130e+00 203 2012 2 3.93014e+01 1.19221e+00 28 2012 3 4.88533e+01 2.35962e+00 185 2012 4 5.63007e+01 2.02879e+00 115 2012 5 6.18533e+01 9.22440e-01 66 2012 6 6.32867e+01 1.15590e-01 30 2012 7 6.26693e+01 9.61579e-04 11 2012 8 5.63254e+01 1.94629e-01 18 2012 9 5.09444e+01 2.33316e+00 22 2012 10 4.03225e+01 2.18595e+00 94 2012 11 3.35701e+01 2.13926e+00 144 2012 12 2.90287e+01 4.49312e-01 108 2013 1 3.29744e+01 1.09549e+00 106 2013 2 3.91373e+01 2.55479e+00 79 2013 3 4.75096e+01 2.75026e+00 103 2013 4 5.53853e+01 7.93169e-01 48 2013 5 6.19224e+01 4.10834e-01 49 2013 6 6.31541e+01 1.29317e-01 59 2013 7 nan nan 0 2013 8 5.79405e+01 5.98587e-01 36 2013 9 4.79565e+01 1.19951e+00 48 2013 10 4.11075e+01 2.43165e+00 121 2013 11 3.30501e+01 2.38532e+00 109 2013 12 2.87372e+01 3.02506e-01 111 2014 1 3.09129e+01 1.10171e+00 101 2014 2 3.93527e+01 1.52243e+00 135 2014 3 4.80214e+01 3.28657e+00 76 2014 4 5.52581e+01 1.44881e+00 48 2014 5 6.14172e+01 4.93064e-01 32 2014 6 6.33005e+01 7.26027e-02 35 2014 7 6.20642e+01 8.81124e-01 64 2014 8 5.79346e+01 2.21871e+00 48 2014 9 5.01268e+01 2.15150e+00 96 2014 10 4.16523e+01 2.73192e+00 260 2014 11 3.33686e+01 2.31525e+00 185 2014 12 2.88959e+01 3.07003e-01 156 2015 1 3.23434e+01 1.72252e+00 132 2015 2 3.76929e+01 1.80359e+00 132 2015 3 4.83687e+01 2.56529e+00 121 2015 4 5.53246e+01 2.90563e+00 54 2015 5 6.17523e+01 8.14606e-01 73 2015 6 6.31580e+01 7.12724e-03 20 2015 7 6.21601e+01 5.15662e-01 17 2015 8 5.65325e+01 8.33664e-01 37 2015 9 5.02682e+01 1.51834e+00 57 2015 10 4.11133e+01 2.60384e+00 97 2015 11 3.32746e+01 2.14707e+00 65 2015 12 2.86826e+01 2.53023e-01 47 2016 1 3.13892e+01 1.62611e+00 152 2016 2 3.93045e+01 2.44127e+00 241 2016 3 4.70934e+01 2.33054e+00 110 2016 4 5.59565e+01 1.73714e+00 46 2016 5 6.18192e+01 6.38263e-01 34 2016 6 6.30882e+01 1.81218e-01 105 2016 7 6.22526e+01 7.87127e-01 94 2016 8 5.70644e+01 3.01140e-01 43 2016 9 4.88667e+01 2.60909e+00 43 2016 10 4.08423e+01 2.82169e+00 153 2016 11 3.33466e+01 1.65746e+00 154 2016 12 2.87648e+01 4.24180e-01 211 2017 1 3.15133e+01 1.82942e+00 127 2017 2 3.92538e+01 2.57912e+00 238 2017 3 4.84761e+01 2.44077e+00 145 2017 4 5.61626e+01 1.74407e+00 105 2017 5 6.17029e+01 9.67543e-01 67 2017 6 6.31240e+01 1.58027e-03 16 2017 7 nan nan 0 2017 8 5.71474e+01 1.60973e+00 63 2017 9 4.88594e+01 1.65411e+00 59 2017 10 3.91406e+01 2.01765e+00 116 2017 11 3.32902e+01 2.14490e+00 226 2017 12 2.88078e+01 1.69180e-01 93 2018 1 3.08964e+01 1.64525e+00 219 2018 2 4.00458e+01 2.10018e+00 102 2018 3 4.67636e+01 2.30334e+00 171 2018 4 5.65084e+01 2.03986e+00 152 2018 5 6.13672e+01 9.77735e-01 80 2018 6 6.30976e+01 8.25351e-02 40 2018 7 6.17859e+01 5.77765e-01 74 2018 8 5.88456e+01 2.75841e-03 16 2018 9 4.88508e+01 1.30647e+00 43 2018 10 4.02135e+01 2.22886e+00 183 2018 11 3.26074e+01 1.39564e+00 80 2018 12 2.89326e+01 4.33430e-01 120 2019 1 3.14632e+01 1.65354e+00 162 2019 2 3.88531e+01 2.59689e+00 48 2019 3 4.87391e+01 2.76278e+00 106 2019 4 5.79812e+01 8.19543e-01 88 2019 5 6.18992e+01 6.30341e-01 111 2019 6 6.32393e+01 1.39057e-01 37 2019 7 6.25065e+01 4.30196e-01 26 2019 8 5.80284e+01 1.93144e+00 46 2019 9 4.90964e+01 2.11421e+00 96 2019 10 4.14483e+01 1.96845e+00 80 2019 11 3.30464e+01 2.09400e+00 162 2019 12 2.90655e+01 5.58325e-01 49 2020 1 3.04669e+01 1.87409e+00 84 2020 2 3.86819e+01 3.10550e+00 130 2020 3 4.80032e+01 2.11615e+00 106 2020 4 5.70789e+01 2.14382e+00 85 2020 5 6.12992e+01 9.41964e-01 93 2020 6 6.33222e+01 8.18899e-02 34 2020 7 6.22099e+01 2.77768e-03 15 2020 8 5.97389e+01 3.31263e-01 64 2020 9 5.00249e+01 3.38852e-03 16 2020 10 4.09438e+01 1.83030e+00 70 2020 11 3.30043e+01 1.67462e+00 155 2020 12 2.89568e+01 3.92141e-01 154 2021 1 3.10720e+01 2.02560e+00 112 2021 2 4.03365e+01 2.75471e+00 103 2021 3 4.69646e+01 1.73974e+00 101 2021 4 5.54396e+01 1.71732e+00 89 2021 5 6.17760e+01 7.20018e-01 74 2021 6 6.33486e+01 9.16023e-04 10 2021 7 6.15644e+01 3.52630e-01 32 2021 8 5.80312e+01 5.21684e-01 48 2021 9 4.85410e+01 7.36329e-01 25 2021 10 3.95837e+01 1.79595e+00 47 2021 11 3.30139e+01 1.94027e+00 132 2021 12 2.89005e+01 5.95019e-01 102 2022 1 3.14198e+01 1.97274e+00 213 2022 2 3.98876e+01 1.85165e+00 88 2022 3 4.84318e+01 2.83314e+00 169 2022 4 5.83586e+01 2.29741e-01 30 2022 5 6.01478e+01 5.80196e-01 32 2022 6 6.31189e+01 1.33123e-01 40 2022 7 6.20470e+01 7.03844e-01 65 2022 8 5.77551e+01 1.66162e+00 92 2022 9 4.81859e+01 1.17400e+00 56 2022 10 4.16443e+01 2.51845e+00 192 2022 11 3.34890e+01 2.37680e+00 99 2022 12 2.89573e+01 4.78443e-01 194 2023 1 3.10368e+01 1.51613e+00 232 2023 2 3.84648e+01 2.51633e+00 197 2023 3 4.82845e+01 1.72170e+00 126 2023 4 5.77352e+01 6.68389e-01 56 2023 5 6.08666e+01 1.24651e+00 53 2023 6 6.30007e+01 9.82006e-02 33 2023 7 6.21280e+01 9.69030e-01 60 2023 8 5.64008e+01 1.17175e+00 37 2023 9 5.16949e+01 1.62988e+00 104 2023 10 3.96065e+01 1.91992e+00 135 2023 11 3.34968e+01 1.99589e+00 124 2023 12 2.85358e+01 2.14868e-01 50 2024 1 3.13189e+01 1.68055e+00 64 2024 2 4.04983e+01 1.98930e+00 148 2024 3 5.00321e+01 2.65969e+00 96 2024 4 nan nan 0