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 nan nan 0 2002 8 nan nan 0 2002 9 nan nan 0 2002 10 4.08070e+00 6.12067e-01 71 2002 11 4.27396e+00 8.38249e-01 291 2002 12 4.43506e+00 7.11704e-01 86 2003 1 3.56035e+00 2.51465e-01 94 2003 2 3.70564e+00 3.94855e-01 15 2003 3 5.37515e+00 1.17042e+00 113 2003 4 3.19885e+00 1.91592e-01 19 2003 5 1.27719e+01 3.93628e+00 73 2003 6 2.75815e+00 9.83819e-02 3 2003 7 nan nan 0 2003 8 nan nan 0 2003 9 nan nan 0 2003 10 4.41587e+00 1.60287e+00 126 2003 11 3.79917e+00 4.62963e-01 131 2003 12 4.04398e+00 8.06315e-01 224 2004 1 3.46026e+00 5.39700e-01 29 2004 2 4.10549e+00 4.48534e-01 160 2004 3 7.50108e+00 2.52484e+00 400 2004 4 9.47116e+00 1.29761e+00 47 2004 5 7.88463e+00 4.24991e+00 36 2004 6 3.74666e+00 4.35349e-01 34 2004 7 nan nan 0 2004 8 4.44070e+00 4.21778e-01 13 2004 9 3.71618e+00 2.62423e-01 11 2004 10 4.28128e+00 7.28890e-01 77 2004 11 3.89902e+00 5.68146e-02 12 2004 12 3.89113e+00 6.66237e-01 189 2005 1 4.37084e+00 1.00377e+00 198 2005 2 5.27194e+00 1.51631e+00 308 2005 3 5.77376e+00 2.20780e+00 216 2005 4 1.12557e+01 4.69838e+00 46 2005 5 6.05490e+00 2.10174e+00 26 2005 6 4.52671e+00 0.00000e+00 1 2005 7 nan nan 0 2005 8 nan nan 0 2005 9 nan nan 0 2005 10 3.87239e+00 6.80346e-01 56 2005 11 3.87116e+00 9.08820e-01 177 2005 12 4.20642e+00 7.93958e-01 405 2006 1 3.59176e+00 7.33178e-01 103 2006 2 5.84309e+00 1.28954e+00 7 2006 3 5.53073e+00 1.22791e+00 144 2006 4 6.91974e+00 3.35216e+00 80 2006 5 5.23931e+00 0.00000e+00 1 2006 6 6.55127e+00 1.95017e+00 53 2006 7 nan nan 0 2006 8 nan nan 0 2006 9 3.44510e+00 1.31203e-01 8 2006 10 3.61807e+00 5.31960e-01 5 2006 11 4.70468e+00 1.55599e+00 343 2006 12 3.84890e+00 6.18209e-01 106 2007 1 3.33769e+00 3.15297e-01 353 2007 2 7.43204e+00 2.59484e+00 452 2007 3 5.08170e+00 1.06256e+00 221 2007 4 1.51614e+01 2.97050e+00 19 2007 5 6.52531e+00 1.55517e+00 55 2007 6 5.26895e+00 4.58459e-01 10 2007 7 nan nan 0 2007 8 6.72593e+00 5.32025e-01 11 2007 9 7.59600e+00 2.41467e+00 65 2007 10 4.95068e+00 1.57421e+00 225 2007 11 3.83917e+00 1.42560e+00 242 2007 12 3.59430e+00 5.22501e-01 211 2008 1 3.73907e+00 5.24230e-01 116 2008 2 4.53611e+00 9.13028e-01 181 2008 3 4.41426e+00 9.60321e-01 222 2008 4 3.37330e+00 0.00000e+00 1 2008 5 nan nan 0 2008 6 nan nan 0 2008 7 3.29490e+00 2.00317e-01 9 2008 8 nan nan 0 2008 9 8.87808e+00 1.53635e+00 16 2008 10 4.19753e+00 1.28113e+00 85 2008 11 3.57203e+00 6.13120e-01 116 2008 12 4.33021e+00 9.64344e-01 382 2009 1 3.98602e+00 1.09380e+00 567 2009 2 3.71772e+00 3.14968e-01 82 2009 3 4.23523e+00 1.21665e+00 77 2009 4 nan nan 0 2009 5 nan nan 0 2009 6 nan nan 0 2009 7 nan nan 0 2009 8 3.10214e+00 0.00000e+00 1 2009 9 4.22985e+00 5.66583e-01 19 2009 10 3.90123e+00 6.58716e-01 153 2009 11 3.87692e+00 1.07211e+00 162 2009 12 5.69125e+00 1.94364e+00 446 2010 1 4.57422e+00 9.62107e-01 216 2010 2 4.66581e+00 1.38628e+00 96 2010 3 5.36356e+00 1.87782e+00 95 2010 4 4.29561e+00 1.98002e-01 4 2010 5 4.21614e+00 9.08010e-01 48 2010 6 2.92220e+00 9.09719e-02 5 2010 7 nan nan 0 2010 8 nan nan 0 2010 9 3.92651e+00 1.24876e+00 33 2010 10 4.11908e+00 8.20324e-01 277 2010 11 5.39264e+00 2.40197e+00 492 2010 12 4.69539e+00 1.58862e+00 410 2011 1 3.27266e+00 2.23099e-01 125 2011 2 3.25630e+00 4.01822e-01 164 2011 3 3.49321e+00 1.30249e-01 20 2011 4 nan nan 0 2011 5 nan nan 0 2011 6 nan nan 0 2011 7 nan nan 0 2011 8 nan nan 0 2011 9 nan nan 0 2011 10 3.77101e+00 6.49841e-01 78 2011 11 2.89136e+00 8.08298e-02 7 2011 12 4.17843e+00 1.09486e+00 500 2012 1 5.19683e+00 2.06638e+00 528 2012 2 3.07640e+00 3.52476e-01 60 2012 3 2.91120e+00 1.15176e-01 3 2012 4 nan nan 0 2012 5 nan nan 0 2012 6 nan nan 0 2012 7 nan nan 0 2012 8 3.16750e+00 1.01580e-01 3 2012 9 3.14403e+00 2.71926e-01 44 2012 10 2.71939e+00 4.67118e-01 80 2012 11 6.24545e+00 3.33170e+00 201 2012 12 3.33951e+00 4.17905e-01 43 2013 1 7.20110e+00 2.84863e+00 266 2013 2 4.28024e+00 1.83413e+00 327 2013 3 3.37708e+00 4.89216e-01 67 2013 4 nan nan 0 2013 5 nan nan 0 2013 6 nan nan 0 2013 7 nan nan 0 2013 8 nan nan 0 2013 9 3.52390e+00 3.68765e-01 33 2013 10 3.51280e+00 6.34937e-01 103 2013 11 3.15931e+00 3.46920e-01 148 2013 12 3.04030e+00 3.38350e-01 211 2014 1 4.46353e+00 2.56328e+00 164 2014 2 3.81553e+00 8.91487e-01 316 2014 3 4.15296e+00 1.49735e+00 141 2014 4 4.12669e+00 1.15474e-01 2 2014 5 nan nan 0 2014 6 nan nan 0 2014 7 nan nan 0 2014 8 nan nan 0 2014 9 3.08989e+00 4.05632e-01 73 2014 10 3.32598e+00 4.84525e-01 103 2014 11 3.36892e+00 5.40658e-01 121 2014 12 3.68812e+00 4.76765e-01 513 2015 1 5.00998e+00 2.20325e+00 455 2015 2 3.02899e+00 3.28622e-01 43 2015 3 4.69708e+00 1.40673e+00 238 2015 4 3.63552e+00 3.50092e-01 18 2015 5 nan nan 0 2015 6 2.15694e+00 2.01054e-02 3 2015 7 nan nan 0 2015 8 2.95683e+00 1.36069e-01 11 2015 9 3.04934e+00 5.35317e-02 13 2015 10 3.98629e+00 6.78788e-01 37 2015 11 3.72328e+00 4.90587e-01 60 2015 12 3.22891e+00 6.83308e-01 280 2016 1 3.91272e+00 8.94022e-01 281 2016 2 4.36258e+00 1.48178e+00 496 2016 3 4.11445e+00 6.94336e-01 160 2016 4 1.06641e+01 6.08743e+00 48 2016 5 6.40238e+00 1.75869e+00 70 2016 6 nan nan 0 2016 7 nan nan 0 2016 8 nan nan 0 2016 9 3.80274e+00 4.37933e-01 45 2016 10 3.75976e+00 7.41752e-01 144 2016 11 4.12813e+00 8.84092e-01 247 2016 12 3.48940e+00 3.61666e-01 159 2017 1 4.55741e+00 9.25574e-01 339 2017 2 3.73139e+00 1.03011e+00 350 2017 3 3.74167e+00 7.42566e-01 166 2017 4 3.31562e+00 3.20999e-01 5 2017 5 nan nan 0 2017 6 nan nan 0 2017 7 nan nan 0 2017 8 4.50176e+00 3.92293e-01 15 2017 9 3.48259e+00 2.49884e-01 18 2017 10 4.68326e+00 1.93057e+00 74 2017 11 3.36004e+00 2.50908e-01 24 2017 12 3.86804e+00 1.24977e+00 183 2018 1 3.46004e+00 5.89248e-01 287 2018 2 4.31928e+00 7.01264e-01 51 2018 3 4.68916e+00 2.65597e+00 99 2018 4 nan nan 0 2018 5 nan nan 0 2018 6 nan nan 0 2018 7 nan nan 0 2018 8 2.30635e+00 8.57139e-03 2 2018 9 3.26402e+00 1.40572e-01 137 2018 10 3.33684e+00 1.93957e-01 32 2018 11 2.72511e+00 0.00000e+00 2 2018 12 4.12594e+00 8.70164e-01 213 2019 1 2.78740e+00 1.55374e-01 18 2019 2 3.99422e+00 8.76558e-01 247 2019 3 3.96247e+00 8.66464e-01 524 2019 4 6.60430e+00 1.60916e+00 107 2019 5 7.67289e+00 2.26534e+00 291 2019 6 7.03995e+00 1.52099e+00 240 2019 7 nan nan 0 2019 8 3.86409e+00 1.98517e-01 28 2019 9 3.79342e+00 5.65196e-01 145 2019 10 3.72739e+00 4.06577e-01 168 2019 11 3.26684e+00 3.37354e-01 149 2019 12 2.83225e+00 2.35657e-01 148 2020 1 3.56024e+00 4.91938e-01 260 2020 2 5.47248e+00 1.37461e+00 507 2020 3 4.48728e+00 1.71078e+00 321 2020 4 5.63410e+00 9.77131e-01 92 2020 5 2.87149e+00 5.34438e-01 6 2020 6 2.53797e+00 2.44504e-02 2 2020 7 nan nan 0 2020 8 nan nan 0 2020 9 4.37395e+00 6.96537e-01 74 2020 10 3.39796e+00 4.75007e-01 292 2020 11 3.17546e+00 2.40836e-01 127 2020 12 3.58820e+00 6.13140e-01 93 2021 1 4.44674e+00 8.04130e-01 388 2021 2 3.66794e+00 6.16620e-01 199 2021 3 3.31766e+00 1.03722e+00 43 2021 4 3.01024e+00 6.16633e-02 8 2021 5 2.90583e+00 2.05677e-01 15 2021 6 1.69090e+00 8.75645e-02 14 2021 7 nan nan 0 2021 8 3.21826e+00 3.05806e-01 4 2021 9 3.54816e+00 6.07436e-01 121 2021 10 3.03084e+00 3.26654e-01 133 2021 11 3.01105e+00 2.59321e-01 79 2021 12 3.12927e+00 3.82799e-01 15 2022 1 3.70460e+00 7.63749e-01 138 2022 2 3.84606e+00 1.24813e+00 457 2022 3 3.36993e+00 4.06859e-01 7 2022 4 nan nan 0 2022 5 nan nan 0 2022 6 nan nan 0 2022 7 1.82127e+00 6.94584e-02 4 2022 8 nan nan 0 2022 9 2.90850e+00 2.24026e-01 65 2022 10 2.80622e+00 2.71280e-01 336 2022 11 3.07172e+00 3.62738e-01 170 2022 12 3.30513e+00 6.69515e-01 447 2023 1 3.05479e+00 4.51665e-01 176 2023 2 4.17200e+00 1.41830e+00 122 2023 3 4.66133e+00 1.35512e+00 677 2023 4 3.05014e+00 4.05432e-01 230 2023 5 3.31329e+00 1.71218e-01 29 2023 6 3.13548e+00 2.92567e-01 35 2023 7 2.88100e+00 4.28722e-01 38 2023 8 nan nan 0 2023 9 3.70967e+00 8.71980e-01 91 2023 10 3.85064e+00 6.15469e-01 96 2023 11 3.36963e+00 4.16542e-01 130 2023 12 3.71831e+00 1.01464e+00 469 2024 1 3.01574e+00 3.61764e-01 347 2024 2 3.95335e+00 1.05628e+00 607 2024 3 3.10101e+00 3.81871e-01 101 2024 4 3.74627e+00 4.61356e-01 66