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 5.81308e+01 4.12174e-02 29 2002 8 5.56856e+01 5.02707e-01 31 2002 9 5.09632e+01 2.53346e+00 29 2002 10 4.29555e+01 1.80062e+00 98 2002 11 3.66131e+01 1.76392e+00 84 2002 12 3.28347e+01 9.17356e-02 88 2003 1 3.49745e+01 1.15709e+00 110 2003 2 4.16758e+01 2.18076e+00 91 2003 3 5.14679e+01 2.86257e+00 64 2003 4 5.70252e+01 1.10905e+00 43 2003 5 5.91963e+01 5.46969e-01 42 2003 6 nan nan 0 2003 7 5.79084e+01 2.31974e-02 16 2003 8 5.61269e+01 5.34222e-03 9 2003 9 nan nan 0 2003 10 4.49463e+01 1.56067e+00 99 2003 11 3.61213e+01 1.20380e+00 111 2003 12 3.29622e+01 2.75586e-01 91 2004 1 3.59317e+01 1.84056e+00 109 2004 2 4.21038e+01 2.30978e+00 81 2004 3 5.19206e+01 2.53391e+00 104 2004 4 5.77573e+01 9.95039e-01 51 2004 5 5.97207e+01 2.54250e-01 26 2004 6 5.96776e+01 9.83061e-01 39 2004 7 5.82613e+01 3.49192e-01 58 2004 8 5.53572e+01 1.06784e+00 48 2004 9 5.05933e+01 7.99584e-03 8 2004 10 4.43781e+01 2.54674e+00 101 2004 11 3.73146e+01 1.41090e+00 101 2004 12 3.28711e+01 3.47761e-01 91 2005 1 3.58525e+01 1.61551e+00 117 2005 2 4.28914e+01 6.41956e-01 69 2005 3 4.97345e+01 1.95306e+00 64 2005 4 5.72808e+01 1.36306e+00 54 2005 5 5.99618e+01 3.32713e-02 21 2005 6 5.79460e+01 1.72001e-01 2 2005 7 nan nan 0 2005 8 5.69081e+01 5.95185e-01 61 2005 9 5.21920e+01 1.24747e+00 49 2005 10 4.23351e+01 2.70294e+00 39 2005 11 3.73000e+01 1.77093e+00 102 2005 12 3.31586e+01 4.31606e-01 122 2006 1 3.47920e+01 1.31838e+00 85 2006 2 4.28909e+01 1.91644e+00 91 2006 3 5.21829e+01 2.91920e+00 45 2006 4 5.68568e+01 1.05415e+00 39 2006 5 5.90046e+01 5.73080e-01 46 2006 6 5.93158e+01 8.12980e-01 21 2006 7 5.73898e+01 1.23104e-01 27 2006 8 5.48590e+01 9.00078e-03 4 2006 9 5.20998e+01 1.74169e+00 47 2006 10 4.44730e+01 1.81750e+00 89 2006 11 3.56309e+01 9.47489e-01 72 2006 12 3.30356e+01 2.02210e-01 48 2007 1 3.62718e+01 2.00198e+00 87 2007 2 4.46053e+01 6.31589e-01 61 2007 3 5.00647e+01 1.35832e+00 51 2007 4 5.71855e+01 1.28689e+00 91 2007 5 5.94884e+01 4.45374e-01 49 2007 6 5.80839e+01 8.37014e-01 50 2007 7 5.82010e+01 2.10492e-01 27 2007 8 5.65382e+01 1.00141e+00 47 2007 9 5.04879e+01 1.48438e+00 32 2007 10 4.36823e+01 2.13796e+00 42 2007 11 3.74739e+01 1.42914e+00 140 2007 12 3.28379e+01 1.71454e-01 122 2008 1 3.58511e+01 2.51067e+00 49 2008 2 4.50244e+01 2.38735e+00 62 2008 3 5.09135e+01 2.36896e+00 59 2008 4 5.79641e+01 1.98216e+00 25 2008 5 5.94101e+01 6.39894e-01 33 2008 6 5.79497e+01 1.10633e-01 23 2008 7 5.81910e+01 5.19633e-03 8 2008 8 5.63487e+01 1.22957e+00 41 2008 9 5.19647e+01 3.72086e-01 11 2008 10 4.56640e+01 2.16789e+00 39 2008 11 3.64641e+01 1.86360e+00 164 2008 12 3.29320e+01 3.40989e-01 89 2009 1 3.66916e+01 1.56635e+00 80 2009 2 4.32553e+01 2.32740e+00 110 2009 3 4.86682e+01 1.33370e+00 53 2009 4 5.78314e+01 1.22579e+00 28 2009 5 5.91850e+01 5.60256e-01 70 2009 6 5.76690e+01 1.34533e-01 27 2009 7 5.80564e+01 1.12966e-02 16 2009 8 5.60371e+01 1.20224e+00 55 2009 9 5.01253e+01 3.92819e-03 16 2009 10 4.39630e+01 2.13452e+00 62 2009 11 3.63305e+01 1.39980e+00 78 2009 12 3.29706e+01 9.48889e-02 45 2010 1 3.57852e+01 1.53338e+00 80 2010 2 4.34225e+01 2.18505e+00 105 2010 3 5.10457e+01 2.66034e+00 110 2010 4 5.57435e+01 1.95669e-01 17 2010 5 5.93873e+01 1.88458e-03 3 2010 6 5.85987e+01 8.16879e-01 11 2010 7 5.72784e+01 1.92040e-01 34 2010 8 5.70893e+01 4.48493e-01 20 2010 9 5.35544e+01 2.99820e-01 14 2010 10 4.54236e+01 2.30761e+00 119 2010 11 3.72258e+01 1.67764e+00 122 2010 12 3.31437e+01 4.80516e-01 185 2011 1 3.72305e+01 1.83832e+00 48 2011 2 4.34084e+01 1.49202e+00 52 2011 3 5.15108e+01 1.85014e+00 131 2011 4 5.79644e+01 1.03416e+00 55 2011 5 5.91539e+01 3.95128e-01 32 2011 6 5.78603e+01 1.04277e-01 29 2011 7 5.78034e+01 3.37509e-01 17 2011 8 5.71120e+01 0.00000e+00 1 2011 9 5.24097e+01 7.14390e-01 39 2011 10 4.58649e+01 1.64484e+00 48 2011 11 3.77065e+01 1.60529e+00 116 2011 12 3.31933e+01 5.02061e-01 154 2012 1 3.52637e+01 1.34969e+00 102 2012 2 4.21114e+01 1.70185e+00 37 2012 3 5.13660e+01 2.55212e+00 51 2012 4 5.72674e+01 1.88587e+00 38 2012 5 5.92234e+01 4.64299e-01 34 2012 6 5.75729e+01 1.40071e-02 15 2012 7 5.76332e+01 1.92918e-02 10 2012 8 5.62266e+01 6.20103e-01 18 2012 9 5.35070e+01 1.77133e-01 27 2012 10 4.40124e+01 1.83861e+00 98 2012 11 3.69342e+01 1.91884e+00 196 2012 12 3.31947e+01 4.56207e-01 33 2013 1 3.56612e+01 1.36849e+00 103 2013 2 4.17629e+01 2.20449e+00 53 2013 3 4.99315e+01 2.41679e+00 35 2013 4 5.81698e+01 1.45764e+00 32 2013 5 5.92016e+01 2.12889e-01 40 2013 6 5.75530e+01 7.21108e-03 16 2013 7 5.80142e+01 5.25343e-01 19 2013 8 5.53227e+01 1.13770e-02 16 2013 9 5.13408e+01 1.89348e+00 29 2013 10 4.50367e+01 2.24909e+00 170 2013 11 3.64346e+01 1.53092e+00 64 2013 12 3.31413e+01 3.14400e-01 68 2014 1 3.68332e+01 8.76099e-01 97 2014 2 4.26048e+01 1.65970e+00 59 2014 3 5.04452e+01 2.11625e+00 136 2014 4 5.95898e+01 5.15037e-02 32 2014 5 5.88707e+01 6.05207e-01 48 2014 6 5.78560e+01 2.35463e-01 56 2014 7 nan nan 0 2014 8 5.65970e+01 7.31589e-01 76 2014 9 5.16496e+01 2.48653e+00 24 2014 10 4.25458e+01 1.61799e+00 99 2014 11 3.70147e+01 2.20163e+00 145 2014 12 3.29085e+01 2.46501e-01 87 2015 1 3.71459e+01 1.25793e+00 66 2015 2 4.29241e+01 2.13447e+00 158 2015 3 5.13529e+01 2.36616e+00 100 2015 4 nan nan 0 2015 5 5.90476e+01 6.29656e-01 58 2015 6 5.76986e+01 8.93702e-02 31 2015 7 5.80068e+01 3.51720e-01 39 2015 8 5.67428e+01 1.01794e+00 42 2015 9 5.02624e+01 1.37509e+00 19 2015 10 4.17376e+01 6.01869e-01 34 2015 11 3.70112e+01 2.03512e+00 112 2015 12 3.26557e+01 7.30155e-02 80 2016 1 3.59472e+01 1.74377e+00 41 2016 2 4.31153e+01 2.38295e+00 121 2016 3 4.91906e+01 2.74358e-01 32 2016 4 5.70501e+01 1.37057e+00 64 2016 5 5.94124e+01 3.16876e-01 45 2016 6 5.75194e+01 8.72657e-02 59 2016 7 5.74634e+01 3.03290e-01 31 2016 8 5.56182e+01 1.55468e-01 40 2016 9 5.07276e+01 1.43368e+00 57 2016 10 4.53905e+01 1.50584e+00 48 2016 11 3.60626e+01 1.59594e+00 103 2016 12 3.27996e+01 2.20294e-01 62 2017 1 3.69466e+01 1.88873e+00 94 2017 2 4.25209e+01 2.25150e+00 81 2017 3 5.34922e+01 1.79468e+00 48 2017 4 5.90280e+01 0.00000e+00 1 2017 5 5.91529e+01 6.61172e-01 39 2017 6 5.75923e+01 3.40572e-02 24 2017 7 5.83418e+01 3.70017e-01 27 2017 8 5.68375e+01 3.85223e-01 32 2017 9 5.10155e+01 4.22765e-01 26 2017 10 4.14464e+01 1.18160e+00 19 2017 11 3.68821e+01 2.14487e+00 135 2017 12 3.28313e+01 2.57387e-01 173 2018 1 3.47783e+01 9.62972e-01 91 2018 2 4.33932e+01 1.76064e+00 68 2018 3 5.07309e+01 1.86671e+00 140 2018 4 5.78639e+01 1.25105e+00 38 2018 5 nan nan 0 2018 6 nan nan 0 2018 7 5.76179e+01 2.03824e-01 43 2018 8 5.65834e+01 1.07274e+00 17 2018 9 5.09494e+01 1.23289e+00 32 2018 10 4.31068e+01 1.21632e+00 66 2018 11 3.68307e+01 1.96472e+00 68 2018 12 3.29934e+01 2.90564e-01 109 2019 1 3.58482e+01 1.60499e+00 120 2019 2 4.12659e+01 2.95790e+00 79 2019 3 5.05247e+01 2.21316e+00 104 2019 4 5.82816e+01 9.41039e-01 64 2019 5 5.92178e+01 5.14375e-02 25 2019 6 5.77719e+01 2.14336e-01 36 2019 7 5.76066e+01 4.81526e-01 38 2019 8 5.63377e+01 3.40502e-03 13 2019 9 5.02619e+01 7.19686e-01 36 2019 10 4.42245e+01 2.16779e+00 107 2019 11 3.56756e+01 1.50846e+00 123 2019 12 3.30498e+01 4.09014e-01 72 2020 1 3.58549e+01 1.63841e+00 164 2020 2 4.21833e+01 2.32474e+00 77 2020 3 5.09960e+01 2.53763e+00 60 2020 4 5.73243e+01 2.05593e+00 73 2020 5 5.88817e+01 4.88854e-01 42 2020 6 5.78217e+01 2.21183e-01 22 2020 7 5.80348e+01 5.53866e-01 59 2020 8 5.58955e+01 1.08220e+00 102 2020 9 5.06033e+01 2.56910e+00 44 2020 10 4.50773e+01 2.51151e+00 40 2020 11 3.47442e+01 8.18776e-01 59 2020 12 3.28176e+01 1.47894e-01 117 2021 1 3.55300e+01 1.62899e+00 123 2021 2 4.25964e+01 3.03306e+00 85 2021 3 4.98783e+01 1.54801e+00 51 2021 4 5.77270e+01 2.27300e-01 46 2021 5 6.00725e+01 1.21762e-02 16 2021 6 5.99636e+01 1.22517e-02 16 2021 7 5.76471e+01 1.80141e-01 32 2021 8 5.66454e+01 9.55761e-01 29 2021 9 5.05924e+01 2.39138e+00 43 2021 10 4.54292e+01 1.59109e+00 42 2021 11 3.66188e+01 2.28529e+00 106 2021 12 3.30894e+01 4.82293e-01 155 2022 1 3.57547e+01 2.56937e+00 136 2022 2 4.06932e+01 1.24047e+00 93 2022 3 5.29330e+01 1.43328e+00 23 2022 4 nan nan 0 2022 5 5.94624e+01 4.44744e-01 68 2022 6 5.81650e+01 1.21136e+00 59 2022 7 5.75438e+01 7.83300e-01 18 2022 8 5.50974e+01 6.35195e-01 18 2022 9 5.14998e+01 8.05037e-01 32 2022 10 4.26444e+01 1.49877e+00 61 2022 11 3.66569e+01 1.43748e+00 68 2022 12 3.30439e+01 3.46202e-01 125 2023 1 3.57697e+01 1.34407e+00 175 2023 2 4.34941e+01 2.68786e+00 105 2023 3 4.92050e+01 2.01965e+00 69 2023 4 5.73551e+01 1.13286e+00 32 2023 5 5.92378e+01 6.16012e-01 51 2023 6 5.77700e+01 9.69944e-02 4 2023 7 5.81787e+01 3.73315e-03 16 2023 8 5.58933e+01 3.92168e-01 27 2023 9 5.16677e+01 2.01010e+00 41 2023 10 4.34515e+01 2.14952e+00 85 2023 11 3.63840e+01 1.90852e+00 66 2023 12 3.29460e+01 2.79287e-01 74 2024 1 3.75645e+01 1.59506e+00 17 2024 2 4.35174e+01 2.17965e+00 71 2024 3 5.30651e+01 1.83705e+00 25 2024 4 nan nan 0