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 3.18816e+00 2.44279e-01 19 2002 8 2.91833e+00 2.36071e-01 36 2002 9 3.45527e+00 7.25969e-01 34 2002 10 3.09891e+00 6.41011e-01 67 2002 11 5.31170e+00 9.61683e-01 132 2002 12 3.81138e+00 8.20451e-01 114 2003 1 3.81396e+00 8.73116e-01 178 2003 2 2.68241e+00 5.70778e-01 102 2003 3 5.18137e+00 6.19055e-01 33 2003 4 3.81394e+00 7.31077e-01 145 2003 5 3.29498e+00 1.04162e+00 46 2003 6 4.18419e+00 1.07964e+00 32 2003 7 4.06624e+00 2.23961e-01 32 2003 8 4.27067e+00 0.00000e+00 2 2003 9 3.72094e+00 4.44272e-01 84 2003 10 3.38001e+00 6.78506e-01 128 2003 11 3.43355e+00 7.28006e-01 160 2003 12 3.39554e+00 7.27099e-01 103 2004 1 3.11718e+00 8.08520e-01 96 2004 2 3.83241e+00 4.17279e-01 32 2004 3 3.46295e+00 7.63252e-01 64 2004 4 3.07131e+00 5.26121e-01 76 2004 5 2.48059e+00 6.12399e-01 58 2004 6 nan nan 0 2004 7 3.14279e+00 4.15181e-01 32 2004 8 2.67510e+00 5.08028e-01 68 2004 9 2.58341e+00 8.73603e-02 7 2004 10 3.71436e+00 7.41327e-01 80 2004 11 3.80058e+00 5.90008e-01 78 2004 12 3.63370e+00 6.14758e-01 57 2005 1 3.48428e+00 1.14678e+00 120 2005 2 2.85076e+00 6.19856e-01 80 2005 3 3.87900e+00 7.33455e-01 121 2005 4 5.34141e+00 1.23411e+00 58 2005 5 3.22924e+00 9.47423e-01 78 2005 6 3.90257e+00 9.58600e-01 48 2005 7 3.94191e+00 1.26527e+00 15 2005 8 4.32120e+00 4.78297e-01 20 2005 9 3.70263e+00 8.15047e-01 55 2005 10 3.16311e+00 4.75466e-01 100 2005 11 3.54031e+00 6.35432e-01 84 2005 12 3.23748e+00 8.89380e-01 87 2006 1 3.06298e+00 4.93266e-01 96 2006 2 3.52192e+00 8.80572e-01 109 2006 3 2.93725e+00 8.51307e-01 129 2006 4 2.50054e+00 5.64909e-01 74 2006 5 2.44064e+00 4.86400e-01 71 2006 6 2.58415e+00 6.51319e-01 54 2006 7 2.77104e+00 2.52584e-01 16 2006 8 2.68462e+00 4.15071e-01 48 2006 9 3.20349e+00 7.03289e-01 84 2006 10 3.05430e+00 8.47768e-01 125 2006 11 3.14495e+00 5.31720e-01 141 2006 12 2.41666e+00 5.79388e-01 96 2007 1 3.35507e+00 7.12554e-01 82 2007 2 3.71332e+00 9.47618e-01 105 2007 3 2.79703e+00 8.02038e-01 121 2007 4 2.64256e+00 8.16118e-01 104 2007 5 2.25262e+00 4.08736e-01 41 2007 6 2.32094e+00 3.60940e-01 18 2007 7 3.08284e+00 3.14000e-01 32 2007 8 3.53802e+00 5.93857e-01 72 2007 9 3.10300e+00 6.14926e-01 54 2007 10 2.78505e+00 5.42768e-01 82 2007 11 3.18058e+00 5.58239e-01 176 2007 12 3.23030e+00 1.46584e+00 46 2008 1 2.98079e+00 8.10359e-01 108 2008 2 2.96234e+00 7.54330e-01 170 2008 3 3.51597e+00 5.49041e-01 116 2008 4 3.11581e+00 7.02825e-01 76 2008 5 2.99448e+00 4.67552e-01 48 2008 6 2.96980e+00 5.37809e-01 30 2008 7 nan nan 0 2008 8 nan nan 0 2008 9 3.42681e+00 5.94098e-01 75 2008 10 3.78208e+00 6.20465e-01 149 2008 11 3.45153e+00 6.01639e-01 175 2008 12 2.99159e+00 6.44840e-01 130 2009 1 3.31230e+00 5.92844e-01 112 2009 2 3.06079e+00 5.80495e-01 135 2009 3 2.90194e+00 6.98686e-01 77 2009 4 3.91767e+00 7.74710e-01 35 2009 5 3.18792e+00 8.25534e-01 28 2009 6 3.34198e+00 3.31727e-01 38 2009 7 1.50551e+00 0.00000e+00 1 2009 8 3.83191e+00 3.70110e-01 47 2009 9 4.17475e+00 1.23235e+00 46 2009 10 3.99362e+00 4.68109e-01 108 2009 11 4.11856e+00 6.87880e-01 83 2009 12 5.09911e+00 9.86827e-01 42 2010 1 5.88759e+00 9.98164e-01 123 2010 2 5.82493e+00 9.18603e-01 101 2010 3 4.76613e+00 1.00541e+00 125 2010 4 3.27092e+00 5.75235e-01 116 2010 5 3.03978e+00 7.04821e-01 51 2010 6 2.60146e+00 5.48848e-01 65 2010 7 3.86639e+00 1.25513e+00 50 2010 8 3.39282e+00 1.20732e-01 16 2010 9 2.95258e+00 5.82423e-01 124 2010 10 3.05355e+00 5.06374e-01 192 2010 11 2.61393e+00 7.36672e-01 185 2010 12 3.37128e+00 8.55157e-01 168 2011 1 3.08036e+00 6.10491e-01 126 2011 2 3.15251e+00 5.84965e-01 151 2011 3 3.01947e+00 4.88655e-01 127 2011 4 3.01133e+00 5.73737e-01 83 2011 5 2.89116e+00 7.23785e-01 127 2011 6 3.44436e+00 2.81606e-01 39 2011 7 3.39251e+00 4.86106e-01 32 2011 8 2.85959e+00 7.01842e-01 75 2011 9 2.69568e+00 4.12569e-01 101 2011 10 3.17122e+00 4.05063e-01 163 2011 11 3.19524e+00 7.28574e-01 176 2011 12 2.72885e+00 6.39951e-01 143 2012 1 2.99102e+00 8.64519e-01 182 2012 2 2.62768e+00 3.26234e-01 16 2012 3 2.96732e+00 7.73654e-01 149 2012 4 2.23851e+00 3.79822e-01 78 2012 5 2.34413e+00 3.34349e-01 74 2012 6 2.88448e+00 7.08444e-01 23 2012 7 3.25657e+00 3.41557e-01 27 2012 8 3.12236e+00 3.62578e-01 16 2012 9 4.35931e+00 9.22510e-01 46 2012 10 4.46966e+00 1.08649e+00 99 2012 11 3.23545e+00 3.93407e-01 130 2012 12 4.13010e+00 1.50717e+00 75 2013 1 3.23716e+00 7.77920e-01 97 2013 2 2.98276e+00 4.81725e-01 59 2013 3 6.18031e+00 7.57939e-01 93 2013 4 3.77734e+00 3.93197e-01 51 2013 5 2.76688e+00 3.62452e-01 37 2013 6 2.44730e+00 4.27780e-01 48 2013 7 nan nan 0 2013 8 4.15061e+00 9.78096e-01 66 2013 9 4.20839e+00 4.85777e-01 63 2013 10 4.11641e+00 5.01121e-01 116 2013 11 2.92129e+00 4.90060e-01 90 2013 12 2.97199e+00 9.23548e-01 101 2014 1 5.15930e+00 1.30660e+00 67 2014 2 3.12047e+00 5.85177e-01 128 2014 3 4.12534e+00 6.13258e-01 65 2014 4 3.92309e+00 8.34408e-01 76 2014 5 4.50918e+00 1.86260e+00 53 2014 6 2.51039e+00 5.06415e-01 56 2014 7 2.98548e+00 6.74591e-01 48 2014 8 2.84955e+00 3.34220e-01 48 2014 9 3.12806e+00 4.15363e-01 53 2014 10 3.32846e+00 5.51976e-01 198 2014 11 3.61688e+00 1.26072e+00 164 2014 12 2.96274e+00 1.05701e+00 128 2015 1 4.69285e+00 8.56114e-01 131 2015 2 4.59366e+00 6.62023e-01 138 2015 3 3.49336e+00 5.23998e-01 81 2015 4 3.53385e+00 3.73904e-01 64 2015 5 3.22662e+00 4.38188e-01 86 2015 6 3.72780e+00 3.28721e-01 22 2015 7 3.64293e+00 3.15012e-01 16 2015 8 3.76053e+00 4.65849e-01 27 2015 9 3.77285e+00 4.42450e-01 52 2015 10 3.05589e+00 4.62825e-01 127 2015 11 3.48549e+00 6.86916e-01 162 2015 12 3.65222e+00 6.96778e-01 73 2016 1 5.73760e+00 1.14302e+00 124 2016 2 4.08078e+00 1.13286e+00 194 2016 3 3.03530e+00 5.89110e-01 83 2016 4 7.18323e+00 1.47126e+00 63 2016 5 2.56595e+00 8.33584e-01 81 2016 6 2.44172e+00 5.51268e-01 87 2016 7 2.49853e+00 4.48625e-01 72 2016 8 3.72434e+00 1.47630e+00 31 2016 9 3.63436e+00 2.78305e-01 46 2016 10 3.64772e+00 7.82169e-01 115 2016 11 3.34998e+00 4.93462e-01 147 2016 12 2.71200e+00 6.27658e-01 165 2017 1 3.56636e+00 1.10650e+00 116 2017 2 3.16142e+00 8.38489e-01 144 2017 3 2.85810e+00 6.76108e-01 108 2017 4 2.80242e+00 1.00781e+00 96 2017 5 2.58821e+00 4.52665e-01 70 2017 6 2.64549e+00 5.31548e-01 33 2017 7 6.04816e+00 1.46847e+00 20 2017 8 3.02861e+00 6.79777e-01 30 2017 9 3.16699e+00 4.33154e-01 48 2017 10 3.61657e+00 4.50330e-01 88 2017 11 3.01877e+00 4.69941e-01 199 2017 12 3.06923e+00 6.29394e-01 64 2018 1 2.99239e+00 7.42386e-01 135 2018 2 2.27004e+00 5.37489e-01 94 2018 3 3.26236e+00 8.75320e-01 137 2018 4 2.80313e+00 4.00948e-01 124 2018 5 2.38625e+00 4.28220e-01 55 2018 6 2.81587e+00 3.18686e-01 50 2018 7 3.12651e+00 3.70775e-01 35 2018 8 nan nan 0 2018 9 4.02324e+00 5.37763e-01 63 2018 10 4.73453e+00 7.07703e-01 156 2018 11 4.72415e+00 8.96167e-01 85 2018 12 5.83090e+00 1.40534e+00 112 2019 1 5.56472e+00 1.41020e+00 141 2019 2 4.08670e+00 6.36928e-01 48 2019 3 3.84729e+00 9.40986e-01 90 2019 4 3.99907e+00 4.76856e-01 69 2019 5 3.02439e+00 4.59657e-01 65 2019 6 2.90305e+00 3.41893e-01 48 2019 7 2.90359e+00 2.24335e-01 16 2019 8 3.17652e+00 4.97145e-01 45 2019 9 3.81879e+00 4.51572e-01 106 2019 10 3.53681e+00 5.30901e-01 107 2019 11 3.00496e+00 7.34361e-01 119 2019 12 2.71097e+00 3.77781e-01 13 2020 1 3.40045e+00 8.60592e-01 64 2020 2 4.52398e+00 1.04352e+00 117 2020 3 4.15192e+00 9.53378e-01 65 2020 4 3.01771e+00 4.90301e-01 101 2020 5 3.10194e+00 6.65514e-01 84 2020 6 3.17582e+00 4.23358e-01 16 2020 7 2.33583e+00 4.37214e-01 23 2020 8 2.54307e+00 4.02266e-01 38 2020 9 1.00718e+01 1.42677e+00 20 2020 10 5.21623e+00 1.26401e+00 78 2020 11 3.86726e+00 4.14433e-01 154 2020 12 3.77109e+00 7.77518e-01 166 2021 1 4.63066e+00 6.16415e-01 89 2021 2 4.56765e+00 1.22001e+00 83 2021 3 3.84557e+00 6.58258e-01 71 2021 4 3.89177e+00 1.12419e+00 116 2021 5 3.36792e+00 4.30957e-01 75 2021 6 nan nan 0 2021 7 3.38050e+00 3.17120e-01 42 2021 8 3.64299e+00 9.95990e-01 39 2021 9 5.38574e+00 8.30416e-01 36 2021 10 4.97991e+00 3.52153e-01 77 2021 11 3.51326e+00 3.88903e-01 183 2021 12 3.09625e+00 5.66343e-01 103 2022 1 3.52112e+00 1.22580e+00 175 2022 2 3.02903e+00 6.03915e-01 99 2022 3 3.84061e+00 1.03087e+00 156 2022 4 2.67475e+00 4.36003e-01 32 2022 5 2.99538e+00 3.70533e-01 48 2022 6 3.30549e+00 6.45538e-01 51 2022 7 3.24247e+00 2.60890e-01 52 2022 8 3.17852e+00 1.02089e+00 64 2022 9 4.61599e+00 4.57992e-01 70 2022 10 3.74468e+00 5.84170e-01 258 2022 11 3.19510e+00 1.01116e+00 81 2022 12 3.00200e+00 1.08371e+00 156 2023 1 3.25020e+00 9.66230e-01 214 2023 2 3.58356e+00 1.10469e+00 167 2023 3 2.61732e+00 7.74725e-01 125 2023 4 3.39151e+00 9.06102e-01 76 2023 5 3.04172e+00 7.97828e-01 44 2023 6 2.57884e+00 4.69487e-01 20 2023 7 3.36249e+00 5.91303e-01 48 2023 8 4.70839e+00 1.10300e+00 49 2023 9 4.28764e+00 6.67800e-01 138 2023 10 3.56279e+00 1.08115e+00 192 2023 11 3.11183e+00 4.37188e-01 140 2023 12 4.45354e+00 9.42747e-01 75 2024 1 4.31589e+00 1.11830e+00 121 2024 2 4.11936e+00 5.73537e-01 159 2024 3 3.80868e+00 7.59297e-01 125 2024 4 nan nan 0