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 3.64612e+00 8.90722e-02 3 2002 8 4.23826e+00 8.09010e-01 51 2002 9 4.76309e+00 1.45008e+00 72 2002 10 7.33492e+00 1.21142e+00 96 2002 11 6.93194e+00 1.92085e+00 155 2002 12 4.95407e+00 1.07281e+00 170 2003 1 4.41590e+00 1.03080e+00 211 2003 2 3.20375e+00 5.64867e-01 104 2003 3 8.61737e+00 1.68315e+00 40 2003 4 5.21976e+00 1.79342e+00 99 2003 5 2.73724e+00 2.26613e-01 12 2003 6 4.13461e+00 2.26792e-01 40 2003 7 8.06038e+00 6.94647e-01 18 2003 8 5.89978e+00 6.48504e-02 6 2003 9 7.32547e+00 7.22446e-01 62 2003 10 5.10558e+00 1.82553e+00 149 2003 11 6.10821e+00 1.35085e+00 190 2003 12 4.76580e+00 1.22330e+00 158 2004 1 3.24955e+00 1.23072e+00 138 2004 2 7.10997e+00 1.71917e+00 48 2004 3 5.38660e+00 1.49572e+00 144 2004 4 2.71491e+00 3.23984e-01 87 2004 5 2.39833e+00 4.40916e-01 75 2004 6 2.60673e+00 3.95769e-01 32 2004 7 3.78596e+00 1.87154e-01 14 2004 8 5.54217e+00 1.79346e+00 49 2004 9 5.51601e+00 1.44837e+00 71 2004 10 5.85901e+00 8.28665e-01 96 2004 11 6.09919e+00 1.11029e+00 115 2004 12 6.77921e+00 1.37029e+00 74 2005 1 5.19803e+00 1.65590e+00 101 2005 2 4.08896e+00 7.75236e-01 112 2005 3 6.07754e+00 1.65851e+00 136 2005 4 9.11740e+00 1.47741e+00 76 2005 5 3.91612e+00 5.81225e-01 48 2005 6 3.14516e+00 2.33110e-01 32 2005 7 6.22169e+00 8.63296e-01 59 2005 8 5.35291e+00 1.06424e+00 25 2005 9 2.41273e+00 2.26732e-01 15 2005 10 3.29130e+00 6.51434e-01 196 2005 11 2.91705e+00 6.55661e-01 172 2005 12 4.39032e+00 1.17288e+00 131 2006 1 4.33523e+00 8.53718e-01 97 2006 2 5.24294e+00 1.49360e+00 125 2006 3 3.71899e+00 1.16814e+00 200 2006 4 2.96394e+00 5.73779e-01 105 2006 5 2.89225e+00 4.68096e-01 93 2006 6 2.76457e+00 2.07253e-01 37 2006 7 3.66741e+00 6.37511e-01 32 2006 8 2.87537e+00 6.48274e-01 64 2006 9 4.76777e+00 1.49857e+00 79 2006 10 3.70410e+00 7.06739e-01 187 2006 11 3.22654e+00 6.02189e-01 195 2006 12 4.34704e+00 1.05656e+00 85 2007 1 7.49560e+00 2.58177e-01 32 2007 2 6.21857e+00 2.31966e+00 172 2007 3 3.28646e+00 8.71088e-01 181 2007 4 2.99204e+00 9.69229e-01 161 2007 5 2.43899e+00 9.20164e-01 50 2007 6 2.86358e+00 4.53814e-01 47 2007 7 2.33565e+00 3.06242e-01 67 2007 8 2.74963e+00 4.12994e-01 52 2007 9 3.94645e+00 5.18165e-01 64 2007 10 3.97958e+00 4.74415e-01 92 2007 11 3.40695e+00 5.53778e-01 196 2007 12 3.58001e+00 6.71209e-01 121 2008 1 4.32144e+00 8.63606e-01 173 2008 2 3.98868e+00 1.06906e+00 178 2008 3 6.28406e+00 1.10939e+00 155 2008 4 3.62579e+00 8.23799e-01 96 2008 5 2.81409e+00 4.37244e-01 117 2008 6 3.42496e+00 3.09612e+00 62 2008 7 2.49591e+00 6.20001e-01 32 2008 8 4.66875e+00 2.21319e-01 12 2008 9 6.38262e+00 1.10173e+00 96 2008 10 4.33301e+00 7.02819e-01 222 2008 11 4.27167e+00 1.19318e+00 214 2008 12 5.19157e+00 1.52953e+00 194 2009 1 4.15014e+00 4.36975e-01 122 2009 2 3.78804e+00 9.10927e-01 209 2009 3 2.83879e+00 5.16592e-01 130 2009 4 7.94521e+00 2.06336e+00 30 2009 5 4.25250e+00 1.10930e+00 65 2009 6 3.14844e+00 4.66789e-01 32 2009 7 1.86578e+00 2.31415e-01 20 2009 8 3.14815e+00 5.19405e-01 48 2009 9 4.89400e+00 8.36735e-01 47 2009 10 5.61826e+00 2.02409e+00 138 2009 11 4.20746e+00 7.02799e-01 143 2009 12 1.01229e+01 2.79821e-01 17 2010 1 8.05285e+00 2.22430e+00 101 2010 2 8.39954e+00 2.09891e+00 76 2010 3 4.55260e+00 7.67874e-01 142 2010 4 4.12670e+00 6.36733e-01 121 2010 5 4.11809e+00 1.70929e-01 32 2010 6 3.28085e+00 3.56822e-01 67 2010 7 3.63159e+00 2.98093e-01 24 2010 8 2.74772e+00 2.73739e-01 9 2010 9 4.03906e+00 7.65735e-01 153 2010 10 4.32785e+00 6.85237e-01 233 2010 11 3.57834e+00 8.43657e-01 236 2010 12 3.17478e+00 9.28900e-01 216 2011 1 3.33845e+00 6.33253e-01 167 2011 2 4.85689e+00 1.48927e+00 122 2011 3 3.42748e+00 5.66272e-01 112 2011 4 3.34191e+00 4.79196e-01 104 2011 5 1.87597e+00 2.85001e-01 83 2011 6 2.70865e+00 2.06425e-01 39 2011 7 2.32468e+00 1.06667e-01 42 2011 8 2.61563e+00 2.39411e-01 78 2011 9 2.38745e+00 9.45139e-01 105 2011 10 3.98608e+00 1.03422e+00 225 2011 11 4.13710e+00 8.25134e-01 164 2011 12 3.03801e+00 6.40987e-01 182 2012 1 2.84432e+00 7.57051e-01 134 2012 2 2.78983e+00 5.81737e-01 40 2012 3 3.19983e+00 8.73096e-01 173 2012 4 2.33395e+00 3.85945e-01 120 2012 5 2.92408e+00 6.57584e-01 70 2012 6 2.16983e+00 9.55183e-02 16 2012 7 5.48986e+00 1.08166e+00 48 2012 8 6.96465e+00 1.26870e+00 25 2012 9 7.82970e+00 9.93796e-01 62 2012 10 5.95428e+00 1.24912e+00 179 2012 11 2.87408e+00 4.50545e-01 156 2012 12 2.31224e+00 3.42187e-01 96 2013 1 2.73709e+00 1.04531e+00 127 2013 2 3.71468e+00 1.35446e+00 101 2013 3 7.94758e+00 1.68811e+00 80 2013 4 5.61896e+00 9.51383e-01 51 2013 5 3.30954e+00 6.32944e-01 65 2013 6 3.21923e+00 2.49866e-01 29 2013 7 nan nan 0 2013 8 8.16092e+00 1.41788e+00 32 2013 9 6.91030e+00 1.98353e+00 131 2013 10 5.57855e+00 2.26368e+00 139 2013 11 3.61261e+00 8.00852e-01 123 2013 12 5.33658e+00 1.74891e+00 136 2014 1 7.11547e+00 8.99581e-01 87 2014 2 6.20532e+00 2.42148e+00 155 2014 3 7.40303e+00 1.66916e+00 53 2014 4 7.93480e+00 8.77081e-01 52 2014 5 7.08225e+00 1.52825e+00 48 2014 6 3.17441e+00 5.44396e-01 47 2014 7 2.64493e+00 3.22496e-01 59 2014 8 2.79979e+00 2.41622e-01 50 2014 9 3.06219e+00 7.70039e-01 125 2014 10 4.44772e+00 1.15569e+00 264 2014 11 4.37417e+00 7.30293e-01 182 2014 12 4.84611e+00 1.79336e+00 137 2015 1 7.37676e+00 1.50160e+00 104 2015 2 9.23828e+00 1.72545e+00 98 2015 3 4.42990e+00 1.07798e+00 92 2015 4 3.51704e+00 8.60143e-01 62 2015 5 3.16459e+00 4.44492e-01 94 2015 6 3.24506e+00 2.51071e-01 57 2015 7 2.70747e+00 1.76128e-01 44 2015 8 4.99100e+00 6.90435e-01 27 2015 9 5.15793e+00 5.71286e-01 17 2015 10 4.04642e+00 1.03402e+00 194 2015 11 6.04234e+00 3.52176e+00 89 2015 12 5.65439e+00 8.34516e-01 92 2016 1 7.86344e+00 9.85072e-01 80 2016 2 5.72418e+00 1.31961e+00 201 2016 3 4.03466e+00 5.26812e-01 158 2016 4 1.06164e+01 1.36973e+00 16 2016 5 2.75589e+00 2.81683e-01 56 2016 6 2.44423e+00 3.64860e-01 95 2016 7 3.29715e+00 7.37096e-01 153 2016 8 6.09981e+00 2.90603e+00 107 2016 9 6.04324e+00 8.91102e-01 102 2016 10 4.39442e+00 7.79642e-01 275 2016 11 3.59898e+00 8.69765e-01 174 2016 12 3.18383e+00 7.95125e-01 155 2017 1 4.05042e+00 1.36645e+00 151 2017 2 4.41314e+00 8.14219e-01 131 2017 3 3.93649e+00 8.52435e-01 189 2017 4 3.21734e+00 7.31658e-01 99 2017 5 2.79439e+00 1.06869e+00 81 2017 6 3.49362e+00 7.04068e-01 20 2017 7 7.48440e+00 1.50453e+00 44 2017 8 6.42036e+00 1.55238e+00 46 2017 9 6.75509e+00 1.26110e+00 84 2017 10 4.67014e+00 1.03548e+00 188 2017 11 3.29648e+00 8.25502e-01 255 2017 12 2.56231e+00 6.26574e-01 99 2018 1 2.52500e+00 1.08183e+00 187 2018 2 2.89290e+00 3.98009e-01 80 2018 3 3.61304e+00 1.22213e+00 155 2018 4 2.94483e+00 4.29990e-01 129 2018 5 4.29035e+00 5.16316e-01 32 2018 6 4.23771e+00 8.82300e-01 51 2018 7 5.58220e+00 1.42199e+00 53 2018 8 5.60823e+00 2.04890e+00 34 2018 9 6.35459e+00 2.43798e+00 104 2018 10 7.22303e+00 2.52562e+00 184 2018 11 7.30075e+00 1.37394e+00 77 2018 12 8.60922e+00 6.19254e-01 48 2019 1 8.14838e+00 1.04026e+00 167 2019 2 6.55470e+00 7.12718e-01 48 2019 3 7.03580e+00 2.06176e+00 137 2019 4 5.06391e+00 1.04383e+00 103 2019 5 2.85093e+00 6.55311e-01 104 2019 6 3.23890e+00 7.84072e-01 32 2019 7 3.73328e+00 1.74267e+00 47 2019 8 3.00053e+00 2.39354e+00 29 2019 9 3.87039e+00 1.31296e+00 156 2019 10 3.91291e+00 5.74005e-01 153 2019 11 3.51578e+00 8.91944e-01 149 2019 12 4.09368e+00 1.23261e+00 88 2020 1 3.88760e+00 1.22050e+00 124 2020 2 4.97483e+00 1.93393e+00 140 2020 3 6.12734e+00 1.09414e+00 109 2020 4 3.90404e+00 6.41221e-01 78 2020 5 3.68859e+00 6.57789e-01 108 2020 6 8.28004e+00 6.05219e-01 30 2020 7 1.60076e+00 2.20877e-01 16 2020 8 2.77177e+00 3.61079e-01 48 2020 9 6.91305e+00 4.82741e+00 20 2020 10 6.10685e+00 9.89207e-01 105 2020 11 5.25644e+00 1.68133e+00 150 2020 12 3.49347e+00 7.59005e-01 214 2021 1 6.45118e+00 1.46911e+00 31 2021 2 7.10532e+00 7.62497e-01 47 2021 3 6.11077e+00 1.31715e+00 139 2021 4 3.65699e+00 3.70872e-01 80 2021 5 3.38829e+00 7.62465e-01 111 2021 6 2.70033e+00 2.18001e-01 48 2021 7 9.07827e+00 2.87291e+00 32 2021 8 6.98702e+00 7.57487e-01 51 2021 9 7.03956e+00 1.80353e+00 23 2021 10 7.44764e+00 4.79797e-01 32 2021 11 4.36071e+00 4.79013e-01 210 2021 12 3.95985e+00 6.76180e-01 88 2022 1 4.50481e+00 1.31313e+00 172 2022 2 4.10305e+00 7.67299e-01 146 2022 3 7.38182e+00 3.93693e+00 165 2022 4 4.26670e+00 5.23648e-01 38 2022 5 3.85582e+00 1.04434e+00 80 2022 6 4.16104e+00 6.96963e-01 48 2022 7 3.23872e+00 1.18478e+00 64 2022 8 3.68099e+00 1.07741e+00 48 2022 9 5.49789e+00 7.45160e-01 69 2022 10 3.92955e+00 5.37991e-01 292 2022 11 3.04596e+00 4.52069e-01 137 2022 12 2.70787e+00 1.22776e+00 212 2023 1 3.24866e+00 1.31662e+00 211 2023 2 6.06727e+00 1.26772e+00 175 2023 3 5.59457e+00 1.46583e+00 143 2023 4 3.28123e+00 9.59118e-01 80 2023 5 2.67068e+00 8.10970e-01 70 2023 6 2.91026e+00 5.41040e-01 79 2023 7 3.63372e+00 1.50796e+00 32 2023 8 2.87928e+00 8.50577e-01 75 2023 9 5.86124e+00 2.54480e+00 115 2023 10 5.15785e+00 1.27093e+00 182 2023 11 4.10896e+00 1.45898e+00 160 2023 12 8.39573e+00 6.93051e-01 32 2024 1 8.82040e+00 3.81037e-01 22 2024 2 6.43004e+00 7.40009e-01 112 2024 3 5.67685e+00 8.51564e-01 73 2024 4 nan nan 0