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 6.14231e+01 5.55968e-01 190 2002 8 5.86595e+01 7.93253e-01 150 2002 9 5.27956e+01 1.24790e+00 89 2002 10 4.55700e+01 2.45489e+00 261 2002 11 3.89719e+01 1.55897e+00 104 2002 12 3.39703e+01 4.05888e-01 98 2003 1 3.57508e+01 1.12959e+00 107 2003 2 4.25316e+01 1.49971e+00 83 2003 3 5.14846e+01 3.25342e+00 444 2003 4 5.84437e+01 8.70000e-01 154 2003 5 6.12713e+01 4.77585e-01 189 2003 6 6.22115e+01 4.36767e-01 65 2003 7 6.12020e+01 8.72677e-01 171 2003 8 5.94355e+01 6.64098e-01 123 2003 9 5.36185e+01 1.26331e+00 112 2003 10 4.52623e+01 1.96048e+00 305 2003 11 3.66283e+01 8.98081e-01 63 2003 12 3.34968e+01 5.14838e-01 69 2004 1 3.63621e+01 1.41523e+00 82 2004 2 4.39776e+01 2.36566e+00 158 2004 3 5.15019e+01 2.81494e+00 267 2004 4 5.82099e+01 1.30928e+00 102 2004 5 6.11686e+01 6.80956e-01 127 2004 6 6.22786e+01 3.44380e-01 211 2004 7 6.14970e+01 6.63745e-01 155 2004 8 5.93686e+01 1.22756e+00 118 2004 9 5.24489e+01 1.41898e+00 80 2004 10 4.44255e+01 2.29510e+00 142 2004 11 3.83501e+01 1.83977e+00 65 2004 12 3.40581e+01 3.27499e-01 116 2005 1 3.68145e+01 1.51168e+00 113 2005 2 4.24529e+01 1.49943e+00 91 2005 3 5.05157e+01 1.88720e+00 143 2005 4 5.69110e+01 1.64032e+00 157 2005 5 6.14261e+01 6.90567e-01 158 2005 6 6.25494e+01 2.18788e-01 24 2005 7 6.06389e+01 9.79203e-01 212 2005 8 5.90754e+01 1.16698e+00 243 2005 9 5.42365e+01 1.24830e+00 217 2005 10 4.59270e+01 3.05823e+00 48 2005 11 3.85739e+01 1.90109e+00 33 2005 12 3.41233e+01 4.75445e-01 533 2006 1 3.52550e+01 1.42018e+00 267 2006 2 4.36353e+01 1.30195e+00 131 2006 3 5.01523e+01 2.54147e+00 225 2006 4 5.79799e+01 1.32246e+00 237 2006 5 6.07357e+01 9.66875e-01 194 2006 6 6.23617e+01 4.06142e-01 171 2006 7 6.12725e+01 3.23751e-01 52 2006 8 5.90911e+01 9.97575e-01 140 2006 9 5.15807e+01 1.11479e+00 54 2006 10 4.60691e+01 1.47010e+00 139 2006 11 3.74542e+01 1.39650e+00 93 2006 12 3.22945e+01 5.89177e+00 52 2007 1 3.58080e+01 1.89493e+00 242 2007 2 4.35201e+01 1.89042e+00 79 2007 3 4.92135e+01 2.64305e+00 165 2007 4 5.84965e+01 1.33687e+00 160 2007 5 6.09632e+01 4.92065e-01 60 2007 6 6.18408e+01 7.82253e-01 171 2007 7 6.13273e+01 5.83755e-01 204 2007 8 5.93870e+01 1.44412e+00 52 2007 9 5.36586e+01 1.55775e+00 58 2007 10 4.74928e+01 1.66950e+00 65 2007 11 3.82838e+01 1.86366e+00 113 2007 12 3.40775e+01 8.33028e-01 103 2008 1 3.60317e+01 1.61927e+00 82 2008 2 4.35257e+01 2.51413e+00 78 2008 3 5.14370e+01 2.11127e+00 105 2008 4 5.71493e+01 1.54869e+00 200 2008 5 6.12482e+01 7.51172e-01 221 2008 6 6.17584e+01 1.46124e+00 122 2008 7 6.11054e+01 4.76252e-01 94 2008 8 5.99663e+01 6.23030e-01 119 2008 9 5.19010e+01 2.04992e+00 81 2008 10 4.81017e+01 1.47451e+00 126 2008 11 3.71109e+01 1.49031e+00 138 2008 12 3.38684e+01 1.69329e-01 65 2009 1 3.66076e+01 1.76337e+00 118 2009 2 4.35377e+01 2.25194e+00 104 2009 3 5.05856e+01 2.44737e+00 160 2009 4 5.68414e+01 1.68122e+00 311 2009 5 6.08549e+01 5.16114e-01 120 2009 6 6.20112e+01 4.69434e-01 180 2009 7 6.19788e+01 5.19688e-01 189 2009 8 5.92142e+01 1.04515e+00 153 2009 9 5.27197e+01 1.33246e+00 56 2009 10 4.62497e+01 1.99528e+00 180 2009 11 3.74527e+01 1.34134e+00 198 2009 12 3.39171e+01 4.73028e-01 77 2010 1 3.55785e+01 1.49099e+00 67 2010 2 4.21980e+01 1.83556e+00 95 2010 3 5.11648e+01 2.49743e+00 172 2010 4 5.69043e+01 1.67555e+00 108 2010 5 6.15095e+01 5.20147e-01 91 2010 6 6.19520e+01 5.62220e-01 292 2010 7 6.10017e+01 4.19845e-01 59 2010 8 5.91392e+01 1.14604e+00 109 2010 9 5.35859e+01 1.90644e+00 95 2010 10 4.65233e+01 2.66462e+00 290 2010 11 3.83591e+01 1.59554e+00 199 2010 12 3.40470e+01 5.16042e-01 125 2011 1 3.56322e+01 9.68586e-01 53 2011 2 4.31543e+01 2.29543e+00 150 2011 3 5.17859e+01 2.05296e+00 124 2011 4 5.85203e+01 1.28942e+00 107 2011 5 6.12853e+01 7.44353e-01 190 2011 6 6.22931e+01 4.16949e-01 172 2011 7 6.11172e+01 5.91224e-01 195 2011 8 6.04669e+01 1.47793e-01 32 2011 9 5.32968e+01 1.88697e+00 202 2011 10 4.62314e+01 1.30772e+00 115 2011 11 3.91199e+01 1.64519e+00 147 2011 12 3.38469e+01 4.45898e-01 167 2012 1 3.56386e+01 1.38819e+00 46 2012 2 4.36615e+01 1.30507e+00 112 2012 3 5.26408e+01 2.40231e+00 121 2012 4 5.70799e+01 8.63194e-01 209 2012 5 6.02563e+01 9.35677e-01 220 2012 6 6.21590e+01 6.53598e-01 93 2012 7 6.10072e+01 1.09941e+00 134 2012 8 5.95466e+01 7.83355e-01 144 2012 9 5.37108e+01 2.13074e+00 187 2012 10 4.45941e+01 2.00986e+00 167 2012 11 3.91482e+01 2.17436e+00 92 2012 12 3.39091e+01 3.31744e-01 110 2013 1 3.63097e+01 1.69665e+00 129 2013 2 4.24146e+01 2.42737e+00 243 2013 3 5.21402e+01 2.28189e+00 201 2013 4 5.66656e+01 1.48833e+00 160 2013 5 6.12675e+01 3.46473e-01 85 2013 6 6.12799e+01 2.83389e-01 63 2013 7 6.06936e+01 9.02206e-01 116 2013 8 5.88676e+01 8.13939e-01 30 2013 9 5.15651e+01 1.86765e+00 51 2013 10 4.58711e+01 1.73186e+00 194 2013 11 3.76755e+01 1.67856e+00 71 2013 12 3.41363e+01 4.95839e-01 63 2014 1 3.58486e+01 1.47664e+00 109 2014 2 4.20139e+01 1.57415e+00 198 2014 3 4.95202e+01 1.96919e+00 107 2014 4 5.89969e+01 1.08228e+00 126 2014 5 6.08832e+01 4.59263e-01 56 2014 6 6.23905e+01 2.75744e-01 143 2014 7 6.14452e+01 5.54715e-01 146 2014 8 5.92170e+01 1.19709e+00 217 2014 9 5.27268e+01 2.87652e+00 37 2014 10 4.60031e+01 2.54413e+00 193 2014 11 3.81370e+01 1.52241e+00 86 2014 12 3.39081e+01 2.32684e-01 63 2015 1 3.65907e+01 1.50030e+00 259 2015 2 4.39733e+01 2.01484e+00 113 2015 3 5.07361e+01 1.86353e+00 170 2015 4 5.74030e+01 5.87005e-01 117 2015 5 6.12646e+01 5.72222e-01 112 2015 6 6.23959e+01 2.69610e-01 154 2015 7 6.10657e+01 6.54810e-01 121 2015 8 5.96306e+01 9.25080e-01 116 2015 9 5.30595e+01 2.30923e+00 61 2015 10 4.47607e+01 2.96289e+00 193 2015 11 3.82397e+01 1.85454e+00 77 2015 12 3.39044e+01 4.26426e-01 144 2016 1 3.45024e+01 5.16685e-01 73 2016 2 4.26459e+01 2.82863e+00 112 2016 3 5.08723e+01 1.49989e+00 106 2016 4 5.76070e+01 1.70101e+00 112 2016 5 6.10734e+01 6.20444e-01 85 2016 6 6.22724e+01 3.89034e-01 122 2016 7 6.17919e+01 4.87309e-01 52 2016 8 5.87221e+01 6.98554e-01 65 2016 9 5.24481e+01 1.87445e+00 223 2016 10 4.60573e+01 1.39979e+00 87 2016 11 3.79140e+01 1.42398e+00 82 2016 12 3.38065e+01 3.91184e-01 144 2017 1 3.67129e+01 1.45765e+00 74 2017 2 4.37131e+01 2.31046e+00 132 2017 3 5.08437e+01 2.61108e+00 310 2017 4 5.87039e+01 8.82348e-01 97 2017 5 6.11953e+01 7.03709e-01 236 2017 6 6.23739e+01 2.67184e-01 86 2017 7 6.10952e+01 1.07172e+00 101 2017 8 5.98023e+01 4.89470e-01 148 2017 9 5.25455e+01 1.66611e+00 90 2017 10 4.68483e+01 2.92345e+00 47 2017 11 3.71260e+01 1.49770e+00 214 2017 12 3.40475e+01 4.21100e-01 167 2018 1 3.59818e+01 1.23902e+00 98 2018 2 4.40933e+01 1.86368e+00 194 2018 3 5.09110e+01 2.40739e+00 298 2018 4 5.78401e+01 1.77712e+00 259 2018 5 6.05752e+01 6.90300e-02 35 2018 6 6.21446e+01 6.07442e-01 94 2018 7 6.11371e+01 7.42358e-01 306 2018 8 5.86946e+01 1.03978e+00 176 2018 9 5.15881e+01 1.40123e+00 155 2018 10 4.52738e+01 2.99350e+00 63 2018 11 3.77922e+01 1.23479e+00 52 2018 12 3.38397e+01 4.21370e-01 70 2019 1 3.53261e+01 9.19223e-01 114 2019 2 4.37685e+01 2.66925e+00 157 2019 3 5.15764e+01 2.85437e+00 144 2019 4 5.81975e+01 7.86681e-01 210 2019 5 6.09054e+01 5.82515e-01 71 2019 6 6.20066e+01 8.35960e-01 273 2019 7 6.10214e+01 7.83798e-01 150 2019 8 5.92643e+01 6.70229e-01 87 2019 9 5.39110e+01 1.71895e+00 223 2019 10 4.42262e+01 2.47450e+00 125 2019 11 3.77415e+01 2.09612e+00 171 2019 12 3.40297e+01 4.11860e-01 49 2020 1 3.59352e+01 1.38951e+00 158 2020 2 4.39074e+01 1.46771e+00 118 2020 3 5.24648e+01 1.88869e+00 324 2020 4 5.74040e+01 1.59134e+00 170 2020 5 6.10198e+01 9.01890e-01 200 2020 6 6.08247e+01 2.96660e+00 85 2020 7 6.10262e+01 8.69034e-01 101 2020 8 5.89829e+01 1.33572e+00 180 2020 9 5.38634e+01 2.45798e+00 38 2020 10 4.45184e+01 2.50039e+00 130 2020 11 3.67148e+01 9.58077e-01 77 2020 12 3.37915e+01 3.07173e-01 68 2021 1 3.60830e+01 1.48064e+00 48 2021 2 4.37138e+01 1.98681e+00 160 2021 3 5.14254e+01 2.53747e+00 298 2021 4 5.77708e+01 1.33744e+00 170 2021 5 5.99205e+01 9.61571e-01 172 2021 6 6.15134e+01 7.37846e-01 105 2021 7 6.05637e+01 1.19265e+00 303 2021 8 5.88408e+01 1.15705e+00 70 2021 9 5.32920e+01 2.04909e+00 225 2021 10 4.54504e+01 1.78048e+00 87 2021 11 3.82632e+01 2.16368e+00 221 2021 12 3.40518e+01 5.24313e-01 215 2022 1 3.53047e+01 1.08670e+00 168 2022 2 4.27160e+01 2.96393e+00 145 2022 3 5.13837e+01 3.23603e+00 172 2022 4 5.90116e+01 8.67110e-01 45 2022 5 6.06988e+01 9.38096e-01 289 2022 6 6.17993e+01 8.34249e-01 186 2022 7 6.10056e+01 9.09249e-01 149 2022 8 5.82259e+01 1.67666e+00 224 2022 9 5.41405e+01 9.82470e-01 187 2022 10 4.52694e+01 2.81982e+00 196 2022 11 3.84719e+01 2.03347e+00 128 2022 12 3.37657e+01 4.25138e-01 172 2023 1 3.53930e+01 8.60894e-01 79 2023 2 4.32716e+01 1.93113e+00 126 2023 3 5.14739e+01 2.82662e+00 356 2023 4 5.79923e+01 1.41720e+00 114 2023 5 6.04892e+01 7.36765e-01 245 2023 6 6.24445e+01 2.81055e-01 82 2023 7 6.14222e+01 8.76803e-01 165 2023 8 5.91917e+01 8.92361e-01 124 2023 9 5.43676e+01 1.19386e+00 92 2023 10 4.60779e+01 2.66135e+00 214 2023 11 3.77525e+01 1.70536e+00 47 2023 12 3.39907e+01 4.60630e-01 71 2024 1 3.85236e+01 7.54487e-01 100 2024 2 4.42198e+01 2.18540e+00 80 2024 3 5.17713e+01 2.65585e+00 187 2024 4 nan nan 0