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 4.91967e+00 2.25922e-01 16 2002 8 4.23120e+00 2.17953e-01 16 2002 9 nan nan 0 2002 10 3.52570e+00 6.90303e-01 68 2002 11 2.20121e+00 3.49914e-01 79 2002 12 2.94848e+00 4.68634e-01 96 2003 1 3.28785e+00 4.50891e-01 147 2003 2 3.96403e+00 3.54434e-01 96 2003 3 9.74034e-01 4.25980e-01 15 2003 4 3.44205e+00 7.96176e-01 49 2003 5 5.92800e+00 0.00000e+00 1 2003 6 3.18791e+00 2.15334e-01 12 2003 7 1.08678e+00 4.95322e-01 16 2003 8 nan nan 0 2003 9 4.45497e+00 1.15366e+00 15 2003 10 4.65728e+00 4.78187e-01 28 2003 11 3.41274e+00 6.71982e-01 133 2003 12 3.45391e+00 2.92511e-01 91 2004 1 3.72401e+00 4.00245e-01 48 2004 2 3.14667e+00 5.96225e-01 48 2004 3 3.56556e+00 5.66902e-01 52 2004 4 4.27176e+00 1.07946e+00 53 2004 5 4.04809e+00 2.64620e-01 48 2004 6 nan nan 0 2004 7 4.31866e+00 3.03494e-01 19 2004 8 4.69524e+00 3.40158e-01 52 2004 9 4.14769e+00 3.94838e-01 9 2004 10 2.31887e+00 1.20493e+00 74 2004 11 2.72519e+00 1.26888e+00 34 2004 12 3.02662e+00 3.40792e-01 80 2005 1 3.41967e+00 4.34497e-01 117 2005 2 3.50652e+00 2.99255e-01 62 2005 3 3.33861e+00 4.52550e-01 130 2005 4 2.42321e+00 6.98231e-01 45 2005 5 4.27031e+00 1.06031e+00 22 2005 6 3.31283e+00 3.98679e-01 13 2005 7 nan nan 0 2005 8 nan nan 0 2005 9 3.68289e+00 4.93259e-02 11 2005 10 4.40050e+00 8.58997e-01 74 2005 11 3.28140e+00 3.96827e-01 102 2005 12 3.28794e+00 2.92562e-01 37 2006 1 3.30462e+00 2.58860e-01 108 2006 2 3.35748e+00 3.79633e-01 100 2006 3 3.70448e+00 5.67396e-01 99 2006 4 3.89901e+00 2.33048e-01 76 2006 5 4.47029e+00 7.42342e-01 61 2006 6 4.59089e+00 1.13824e-01 16 2006 7 4.29588e+00 9.29681e-02 16 2006 8 4.62975e+00 6.64295e-01 22 2006 9 4.67419e+00 9.63686e-01 71 2006 10 3.90985e+00 5.78165e-01 88 2006 11 4.04263e+00 5.18786e-01 131 2006 12 3.87396e+00 1.32511e+00 122 2007 1 3.02768e+00 4.60609e-01 64 2007 2 3.41491e+00 1.57812e+00 107 2007 3 3.85742e+00 5.18128e-01 121 2007 4 4.06082e+00 5.34912e-01 89 2007 5 4.46973e+00 2.94095e-01 31 2007 6 4.54304e+00 8.16210e-02 15 2007 7 3.93816e+00 1.95835e-01 8 2007 8 4.16369e+00 0.00000e+00 1 2007 9 3.35093e+00 1.02564e+00 17 2007 10 3.64811e+00 8.92930e-01 18 2007 11 3.79739e+00 4.89437e-01 147 2007 12 4.68606e+00 5.11847e-01 48 2008 1 3.87769e+00 6.20170e-01 110 2008 2 3.46160e+00 4.87701e-01 159 2008 3 2.61727e+00 4.45066e-01 102 2008 4 3.51360e+00 4.12656e-01 64 2008 5 3.78065e+00 3.83779e-01 42 2008 6 4.38268e+00 6.05716e-01 30 2008 7 4.03767e+00 1.57075e-01 16 2008 8 nan nan 0 2008 9 2.30560e+00 2.53295e+00 31 2008 10 2.90930e+00 6.04074e-01 100 2008 11 3.64374e+00 7.12843e-01 164 2008 12 3.35940e+00 5.84127e-01 95 2009 1 3.49347e+00 5.91693e-01 121 2009 2 3.30792e+00 2.40130e+00 144 2009 3 3.68803e+00 3.29063e-01 84 2009 4 2.46506e+00 1.61995e-01 15 2009 5 2.22674e+00 2.71345e+00 30 2009 6 4.25255e+00 5.34760e-01 26 2009 7 nan nan 0 2009 8 4.12713e+00 1.78960e-01 35 2009 9 2.89438e+00 6.79564e-01 46 2009 10 2.96871e+00 1.00902e+00 65 2009 11 2.61511e+00 3.01756e-01 57 2009 12 1.35290e-01 1.41000e-01 8 2010 1 1.45371e+00 8.97052e-01 96 2010 2 2.08780e+00 8.73519e-01 67 2010 3 2.91391e+00 6.50720e-01 104 2010 4 5.06191e+00 1.43175e+00 70 2010 5 4.20393e+00 8.84753e-01 48 2010 6 3.20733e+00 4.95998e+00 63 2010 7 3.98311e+00 4.31492e-01 32 2010 8 2.92547e+00 5.63325e-01 15 2010 9 4.84088e+00 8.03568e-01 116 2010 10 4.57032e+00 7.67887e-01 161 2010 11 4.26168e+00 7.60850e-01 147 2010 12 3.46113e+00 5.48178e-01 147 2011 1 3.41857e+00 3.93991e-01 119 2011 2 3.32160e+00 6.69942e-01 122 2011 3 3.62021e+00 5.07885e-01 124 2011 4 4.84604e+00 1.30557e+00 98 2011 5 3.82587e+00 5.24356e-01 66 2011 6 2.92583e+00 6.43498e-02 16 2011 7 3.48234e+00 6.54423e-01 48 2011 8 5.04449e+00 6.51365e-01 46 2011 9 4.49233e+00 3.55126e-01 83 2011 10 3.79816e+00 3.19526e-01 159 2011 11 3.55867e+00 5.88273e-01 114 2011 12 4.15558e+00 4.03089e-01 106 2012 1 3.89544e+00 5.14056e-01 129 2012 2 3.91046e+00 1.61294e+00 20 2012 3 4.16000e+00 7.17755e-01 142 2012 4 4.52637e+00 4.31447e-01 40 2012 5 5.65374e+00 3.66290e-01 11 2012 6 4.62715e+00 7.97197e-01 30 2012 7 4.68586e+00 1.70520e-01 12 2012 8 nan nan 0 2012 9 4.95542e+00 8.14298e-01 15 2012 10 2.70032e+00 7.82669e-01 57 2012 11 3.78798e+00 5.65254e-01 146 2012 12 3.51076e+00 7.20682e-01 69 2013 1 3.60072e+00 4.34915e-01 60 2013 2 2.97692e+00 2.51675e-01 49 2013 3 2.12636e+00 1.34025e+00 97 2013 4 3.33539e+00 2.63127e-01 32 2013 5 4.85971e+00 5.53263e-01 51 2013 6 5.15703e+00 2.38535e-01 25 2013 7 4.76193e+00 2.21139e-01 6 2013 8 3.61536e+00 1.66705e+01 14 2013 9 2.32778e+00 4.76927e+00 27 2013 10 3.80832e+00 1.91939e+00 70 2013 11 3.86238e+00 1.38818e+00 77 2013 12 4.10947e+00 6.54161e-01 58 2014 1 2.39255e+00 5.80599e-01 72 2014 2 3.41503e+00 4.27405e-01 93 2014 3 2.36177e+00 5.45456e-01 56 2014 4 2.89834e+00 7.49289e-01 18 2014 5 2.02696e+00 0.00000e+00 1 2014 6 3.36500e+00 1.57424e-01 14 2014 7 4.76333e+00 4.01453e-01 48 2014 8 5.31722e+00 6.64521e-01 42 2014 9 4.98972e+00 2.47492e+00 42 2014 10 3.71541e+00 6.89982e-01 168 2014 11 3.86757e+00 4.64717e-01 130 2014 12 4.00274e+00 3.90899e-01 96 2015 1 2.42458e+00 5.73625e-01 98 2015 2 2.29029e+00 7.49227e-01 87 2015 3 3.59751e+00 5.87848e-01 79 2015 4 4.49676e+00 3.71994e-01 13 2015 5 3.71446e+00 7.00696e-01 71 2015 6 3.87051e+00 1.97699e-01 14 2015 7 4.24132e+00 5.75305e-01 17 2015 8 nan nan 0 2015 9 4.51391e+00 1.88692e+00 29 2015 10 3.55066e+00 5.03843e-01 59 2015 11 4.02426e+00 3.83040e-01 32 2015 12 nan nan 0 2016 1 1.23705e+00 1.14853e+00 74 2016 2 2.75159e+00 5.78680e-01 206 2016 3 3.35311e+00 2.75790e-01 79 2016 4 2.88632e+00 2.23373e-01 15 2016 5 5.32609e+00 1.68340e-01 16 2016 6 6.05697e+00 2.81845e+00 88 2016 7 5.24000e+00 1.11450e+00 53 2016 8 2.48357e+00 1.00903e+00 20 2016 9 3.96583e+00 2.88500e+00 21 2016 10 3.46167e+00 1.30875e+00 109 2016 11 3.29643e+00 4.16605e-01 115 2016 12 3.96134e+00 6.95706e-01 162 2017 1 3.25209e+00 7.67078e-01 80 2017 2 3.75722e+00 7.84781e-01 166 2017 3 4.12725e+00 4.88418e-01 104 2017 4 3.83763e+00 1.12756e+00 64 2017 5 4.03500e+00 6.16227e-01 48 2017 6 nan nan 0 2017 7 nan nan 0 2017 8 3.59244e+00 4.45300e-01 39 2017 9 4.32381e+00 6.70362e-01 56 2017 10 3.31031e+00 6.20387e-01 52 2017 11 3.88985e+00 5.48065e-01 157 2017 12 4.00203e+00 4.33391e-01 73 2018 1 3.91110e+00 4.82883e-01 150 2018 2 3.73564e+00 3.93729e-01 58 2018 3 4.01225e+00 5.55835e-01 134 2018 4 3.86810e+00 1.16924e+00 112 2018 5 4.26875e+00 4.36982e-01 50 2018 6 4.25725e+00 4.55156e-01 31 2018 7 4.58999e+00 3.89560e-01 18 2018 8 4.33180e+00 5.61702e-01 16 2018 9 4.29269e+00 1.17017e+00 38 2018 10 2.71417e+00 6.75779e-01 105 2018 11 2.50933e+00 4.50970e-01 58 2018 12 1.82881e+00 8.91732e-01 106 2019 1 1.58575e+00 4.66376e-01 109 2019 2 2.48694e+00 5.89385e-01 32 2019 3 2.92293e+00 6.94265e-01 46 2019 4 3.18420e+00 2.40503e-01 64 2019 5 4.60721e+00 1.14102e+00 66 2019 6 4.57323e+00 9.41437e-02 3 2019 7 4.83232e+00 1.11751e-01 16 2019 8 3.88384e+00 2.74727e-01 11 2019 9 3.78777e+00 1.00383e+00 90 2019 10 4.10314e+00 6.36595e-01 63 2019 11 4.39526e+00 5.46686e-01 108 2019 12 4.06946e+00 7.51777e-01 23 2020 1 3.81585e+00 6.20542e-01 64 2020 2 2.99149e+00 3.76808e-01 109 2020 3 2.23180e+00 5.50498e-01 84 2020 4 4.24787e+00 1.15067e+00 87 2020 5 3.62137e+00 6.11684e-01 63 2020 6 4.47228e+00 3.75330e-01 16 2020 7 nan nan 0 2020 8 4.69435e+00 3.60333e-01 33 2020 9 1.70323e+00 1.54795e-01 16 2020 10 2.38532e+00 4.54761e-01 44 2020 11 2.89204e+00 4.57529e-01 99 2020 12 2.94725e+00 3.05303e-01 139 2021 1 2.67435e+00 4.10601e-01 46 2021 2 2.41835e+00 7.62330e-01 99 2021 3 2.51890e+00 7.97308e-01 97 2021 4 3.50278e+00 3.75986e-01 60 2021 5 3.87770e+00 1.00749e+00 48 2021 6 nan nan 0 2021 7 4.08997e+00 1.66339e+00 19 2021 8 4.11346e+00 1.92654e+00 22 2021 9 3.28782e+00 3.35228e-01 9 2021 10 5.14305e+00 1.76736e+00 9 2021 11 2.94360e+00 6.48422e-01 86 2021 12 3.64772e+00 5.07267e-01 62 2022 1 2.98701e+00 4.21262e-01 136 2022 2 3.34143e+00 2.45272e-01 80 2022 3 3.07050e+00 7.11994e-01 88 2022 4 nan nan 0 2022 5 3.18948e+00 1.95123e-01 16 2022 6 3.91005e+00 3.80393e-01 33 2022 7 2.29260e+00 3.48297e+00 24 2022 8 4.60568e+00 6.27401e-01 20 2022 9 2.67800e+00 2.33955e-01 16 2022 10 4.24102e+00 1.36442e+00 141 2022 11 4.65360e+00 7.64785e-01 76 2022 12 3.77245e+00 6.82440e-01 176 2023 1 3.91978e+00 8.96954e-01 180 2023 2 3.10374e+00 8.45945e-01 166 2023 3 3.96231e+00 5.69296e-01 67 2023 4 4.54210e+00 1.29932e+00 64 2023 5 4.49251e+00 1.43001e+00 40 2023 6 4.50224e+00 6.57419e-01 16 2023 7 4.28695e+00 2.05452e-01 32 2023 8 4.65476e+00 3.25219e-01 16 2023 9 3.36783e+00 8.56002e-01 58 2023 10 3.61490e+00 1.00972e+00 127 2023 11 3.47212e+00 9.43891e-01 101 2023 12 3.95883e+00 4.23158e-01 22 2024 1 3.31736e+00 1.50246e+00 57 2024 2 2.78111e+00 4.98695e-01 124 2024 3 2.10778e+00 4.66473e-01 64 2024 4 nan nan 0