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 6.19727e+01 4.80418e-01 24 2002 8 5.70860e+01 8.15309e-01 48 2002 9 5.10850e+01 2.27624e+00 92 2002 10 4.18378e+01 1.72347e+00 96 2002 11 3.38553e+01 2.26143e+00 144 2002 12 2.96117e+01 4.69754e-01 128 2003 1 3.15549e+01 1.23508e+00 112 2003 2 3.87103e+01 2.22513e+00 128 2003 3 4.93846e+01 1.81021e+00 28 2003 4 5.65979e+01 1.94669e+00 98 2003 5 6.07341e+01 6.25112e-01 32 2003 6 6.10484e+01 1.15282e-01 32 2003 7 6.14401e+01 6.84866e-01 48 2003 8 5.54725e+01 1.70966e-01 47 2003 9 5.10827e+01 2.25011e+00 112 2003 10 4.11262e+01 2.87967e+00 152 2003 11 3.38905e+01 1.66551e+00 176 2003 12 2.94475e+01 3.99037e-01 164 2004 1 3.23143e+01 1.13189e+00 131 2004 2 4.23515e+01 1.95167e+00 32 2004 3 4.99923e+01 1.69483e+00 160 2004 4 5.58681e+01 2.03069e+00 136 2004 5 6.12804e+01 1.03318e+00 112 2004 6 6.09816e+01 1.05323e-03 16 2004 7 6.20020e+01 2.66275e-01 60 2004 8 5.62407e+01 7.83309e-01 50 2004 9 5.14594e+01 2.45656e+00 46 2004 10 4.08067e+01 2.22219e+00 78 2004 11 3.36175e+01 2.16704e+00 144 2004 12 2.93002e+01 3.18355e-01 58 2005 1 3.16999e+01 1.88393e+00 136 2005 2 3.89547e+01 1.81055e+00 140 2005 3 4.76151e+01 2.33842e+00 144 2005 4 5.87816e+01 5.20691e-03 16 2005 5 6.16449e+01 8.87584e-01 91 2005 6 6.10491e+01 2.28348e-01 40 2005 7 6.11338e+01 7.11976e-01 74 2005 8 5.51276e+01 5.17508e-03 11 2005 9 5.15616e+01 2.90629e+00 58 2005 10 4.19736e+01 2.91026e+00 255 2005 11 3.41076e+01 1.96997e+00 193 2005 12 2.95948e+01 4.79476e-01 120 2006 1 3.19123e+01 2.17768e+00 74 2006 2 4.02985e+01 2.78909e+00 141 2006 3 4.84219e+01 2.56665e+00 160 2006 4 5.72093e+01 1.88651e+00 127 2006 5 6.17914e+01 8.37188e-01 128 2006 6 6.09765e+01 1.44483e-02 16 2006 7 6.08918e+01 6.82573e-01 32 2006 8 5.73957e+01 1.93793e+00 75 2006 9 4.97941e+01 2.44882e+00 132 2006 10 4.26279e+01 3.11460e+00 203 2006 11 3.40326e+01 1.79635e+00 208 2006 12 2.96775e+01 5.12059e-01 128 2007 1 3.14886e+01 1.14557e+00 78 2007 2 3.97456e+01 2.14994e+00 153 2007 3 4.90391e+01 2.71963e+00 244 2007 4 5.69773e+01 2.07004e+00 157 2007 5 6.11387e+01 1.13873e+00 64 2007 6 6.08362e+01 2.67415e-01 25 2007 7 6.11275e+01 8.40425e-01 94 2007 8 5.57567e+01 1.17417e+00 48 2007 9 4.88537e+01 1.16313e+00 48 2007 10 4.31189e+01 1.61762e+00 126 2007 11 3.42840e+01 1.83916e+00 240 2007 12 2.94407e+01 2.64063e-01 96 2008 1 3.19318e+01 2.00194e+00 112 2008 2 3.82944e+01 2.50289e+00 193 2008 3 5.07609e+01 3.33397e+00 72 2008 4 5.76835e+01 9.92049e-01 85 2008 5 6.23182e+01 3.93373e-01 96 2008 6 6.09806e+01 7.42867e-01 138 2008 7 6.15005e+01 7.63229e-01 47 2008 8 5.88658e+01 5.73875e-03 16 2008 9 5.09590e+01 1.76180e+00 150 2008 10 4.12715e+01 3.00619e+00 256 2008 11 3.41850e+01 1.64512e+00 239 2008 12 2.98443e+01 5.02308e-01 140 2009 1 3.18007e+01 1.87752e+00 127 2009 2 3.93858e+01 2.65821e+00 206 2009 3 4.75163e+01 1.59752e+00 99 2009 4 5.91588e+01 3.39090e-01 24 2009 5 6.22353e+01 7.46501e-01 64 2009 6 6.09721e+01 7.93029e-02 32 2009 7 6.09266e+01 7.50864e-01 22 2009 8 5.65100e+01 1.04890e+00 57 2009 9 5.13147e+01 2.01494e+00 75 2009 10 4.20511e+01 2.86051e+00 179 2009 11 3.38490e+01 1.88766e+00 142 2009 12 3.00126e+01 3.19572e-01 19 2010 1 3.18457e+01 1.51057e+00 14 2010 2 4.05925e+01 3.03874e+00 64 2010 3 4.77091e+01 3.40885e+00 112 2010 4 5.63463e+01 1.85823e+00 129 2010 5 6.11730e+01 7.08812e-01 48 2010 6 6.11273e+01 7.17534e-01 96 2010 7 6.10725e+01 9.12673e-01 49 2010 8 5.86465e+01 8.65550e-04 8 2010 9 5.07484e+01 2.08073e+00 144 2010 10 4.21157e+01 2.76525e+00 310 2010 11 3.39046e+01 1.70460e+00 272 2010 12 2.98636e+01 5.00343e-01 160 2011 1 3.18848e+01 1.71783e+00 174 2011 2 4.07091e+01 1.65807e+00 131 2011 3 4.88270e+01 2.49723e+00 159 2011 4 5.57292e+01 1.73614e+00 128 2011 5 6.17519e+01 6.26196e-01 80 2011 6 6.13050e+01 6.70555e-01 104 2011 7 6.10682e+01 4.61539e-01 48 2011 8 5.65041e+01 1.74077e+00 86 2011 9 5.07072e+01 2.65430e+00 153 2011 10 4.14842e+01 2.08985e+00 182 2011 11 3.41820e+01 1.84467e+00 128 2011 12 2.95568e+01 4.50329e-01 183 2012 1 3.13732e+01 1.82616e+00 187 2012 2 3.91479e+01 1.52202e+00 59 2012 3 4.93678e+01 2.29815e+00 150 2012 4 5.69086e+01 1.90536e+00 189 2012 5 6.13250e+01 6.85421e-01 111 2012 6 6.10444e+01 8.60901e-03 16 2012 7 6.16668e+01 5.70050e-01 76 2012 8 5.69228e+01 1.52442e+00 30 2012 9 5.01939e+01 2.54550e+00 71 2012 10 4.17987e+01 1.89275e+00 176 2012 11 3.41318e+01 2.01390e+00 197 2012 12 2.96923e+01 4.28663e-01 100 2013 1 3.36381e+01 9.29260e-01 88 2013 2 3.74593e+01 1.42963e+00 89 2013 3 5.21678e+01 1.62728e+00 64 2013 4 5.53981e+01 7.06715e-01 29 2013 5 6.15979e+01 6.85550e-01 63 2013 6 6.18619e+01 1.00149e+00 32 2013 7 6.08974e+01 1.94395e-01 22 2013 8 5.65778e+01 1.10857e+00 41 2013 9 5.15810e+01 2.11133e+00 128 2013 10 4.13572e+01 2.99605e+00 168 2013 11 3.36708e+01 2.50122e+00 82 2013 12 2.93181e+01 2.98669e-01 107 2014 1 3.22300e+01 1.04313e+00 74 2014 2 3.98040e+01 1.54470e+00 121 2014 3 4.92665e+01 6.90132e-01 33 2014 4 5.47157e+01 6.95971e-01 48 2014 5 6.17811e+01 4.64927e-01 94 2014 6 6.07916e+01 2.41867e-01 52 2014 7 6.18217e+01 5.86318e-01 57 2014 8 5.67364e+01 2.09145e+00 63 2014 9 5.12189e+01 1.99568e+00 144 2014 10 4.21092e+01 2.74583e+00 272 2014 11 3.30367e+01 1.89445e+00 150 2014 12 2.94821e+01 2.82592e-01 144 2015 1 3.28067e+01 1.22871e+00 95 2015 2 3.86778e+01 1.25966e+00 96 2015 3 4.93537e+01 3.05423e+00 121 2015 4 5.39204e+01 5.33374e-01 25 2015 5 6.13413e+01 9.90617e-01 135 2015 6 6.08898e+01 1.97546e-01 59 2015 7 6.12284e+01 5.82821e-01 44 2015 8 5.61026e+01 6.83195e-01 32 2015 9 5.00657e+01 1.62272e+00 99 2015 10 4.04153e+01 2.09476e+00 145 2015 11 3.34342e+01 1.83373e+00 128 2015 12 2.97490e+01 3.79124e-01 137 2016 1 3.26282e+01 1.65179e+00 44 2016 2 3.93639e+01 1.86631e+00 89 2016 3 4.76305e+01 1.40683e+00 57 2016 4 5.47934e+01 1.34634e+00 39 2016 5 6.15975e+01 6.31024e-01 112 2016 6 6.13778e+01 8.99652e-01 112 2016 7 6.12339e+01 6.44838e-01 160 2016 8 5.60146e+01 9.95935e-01 120 2016 9 5.03287e+01 2.62045e+00 99 2016 10 4.13487e+01 2.86883e+00 272 2016 11 3.35221e+01 1.59251e+00 188 2016 12 2.92793e+01 2.82325e-01 113 2017 1 3.29676e+01 1.08558e+00 27 2017 2 4.03255e+01 2.24415e+00 117 2017 3 4.98512e+01 2.62196e+00 168 2017 4 5.61039e+01 1.59854e+00 100 2017 5 6.12363e+01 8.66672e-01 79 2017 6 6.08752e+01 6.12282e-02 44 2017 7 6.13575e+01 7.53395e-01 53 2017 8 5.72281e+01 1.44941e+00 48 2017 9 4.99108e+01 2.06058e+00 104 2017 10 4.03638e+01 2.41597e+00 193 2017 11 3.36617e+01 2.13595e+00 236 2017 12 2.94744e+01 1.51668e-01 111 2018 1 3.17700e+01 1.77173e+00 201 2018 2 4.08934e+01 2.24370e+00 80 2018 3 4.79767e+01 2.67149e+00 176 2018 4 5.65579e+01 1.98333e+00 135 2018 5 6.13870e+01 8.74548e-01 91 2018 6 6.07571e+01 9.11352e-02 49 2018 7 6.10159e+01 4.79011e-01 78 2018 8 5.51082e+01 9.16142e-03 16 2018 9 5.06466e+01 1.89164e+00 168 2018 10 4.21152e+01 2.85149e+00 241 2018 11 3.33007e+01 1.52738e+00 84 2018 12 3.01116e+01 5.93316e-02 20 2019 1 3.41677e+01 1.10494e-03 12 2019 2 3.95869e+01 2.61471e+00 48 2019 3 4.93288e+01 2.95236e+00 171 2019 4 5.74313e+01 1.15068e+00 73 2019 5 6.16890e+01 8.80931e-01 140 2019 6 6.12595e+01 5.32030e-01 85 2019 7 6.06120e+01 3.33908e-01 70 2019 8 5.69310e+01 1.63226e+00 129 2019 9 5.10858e+01 2.51558e+00 217 2019 10 4.34003e+01 2.52335e+00 144 2019 11 3.32702e+01 1.97556e+00 153 2019 12 2.99860e+01 4.47941e-01 53 2020 1 3.17791e+01 2.02821e+00 48 2020 2 3.58445e+01 4.90853e-01 34 2020 3 5.04446e+01 2.28942e+00 50 2020 4 5.82426e+01 1.58445e+00 34 2020 5 6.17818e+01 5.40503e-01 36 2020 6 6.08787e+01 2.63553e-01 80 2020 7 6.13410e+01 3.80774e-03 16 2020 8 5.85511e+01 3.16704e-01 34 2020 9 5.15338e+01 2.01543e+00 66 2020 10 4.06629e+01 1.65860e+00 112 2020 11 3.29281e+01 1.86659e+00 186 2020 12 2.94868e+01 3.36691e-01 243 2021 1 3.09478e+01 1.49912e+00 71 2021 2 nan nan 0 2021 3 4.81164e+01 1.69529e+00 73 2021 4 5.65377e+01 1.98855e+00 145 2021 5 6.21252e+01 3.97392e-01 92 2021 6 6.20263e+01 9.25226e-01 32 2021 7 6.08993e+01 3.58119e-01 64 2021 8 5.72011e+01 8.24525e-01 90 2021 9 5.00791e+01 2.41873e+00 83 2021 10 4.13234e+01 2.06062e+00 107 2021 11 3.32961e+01 1.70890e+00 210 2021 12 2.93666e+01 4.15508e-01 117 2022 1 3.06174e+01 2.17715e+00 66 2022 2 4.22908e+01 1.26538e+00 76 2022 3 4.87503e+01 3.13413e+00 144 2022 4 5.85692e+01 4.24960e-01 32 2022 5 6.00559e+01 5.00216e-01 44 2022 6 6.13293e+01 9.12312e-01 119 2022 7 6.11693e+01 7.03368e-01 112 2022 8 5.76195e+01 1.93152e+00 74 2022 9 5.05095e+01 1.47581e+00 100 2022 10 4.26156e+01 2.54766e+00 302 2022 11 3.43042e+01 2.01967e+00 147 2022 12 2.95987e+01 4.50423e-01 179 2023 1 3.08428e+01 1.08901e+00 143 2023 2 3.90426e+01 3.23750e+00 81 2023 3 4.88767e+01 1.87378e+00 112 2023 4 5.78042e+01 6.14029e-01 64 2023 5 6.09848e+01 8.69163e-01 48 2023 6 6.13885e+01 1.04990e+00 55 2023 7 6.04368e+01 1.55484e-01 32 2023 8 5.68705e+01 1.63832e+00 57 2023 9 5.13060e+01 1.50615e+00 128 2023 10 4.01525e+01 2.34273e+00 195 2023 11 3.47987e+01 1.86029e+00 120 2023 12 2.91941e+01 1.96998e-01 58 2024 1 3.06657e+01 2.01966e+00 62 2024 2 3.79785e+01 8.95589e-01 43 2024 3 5.03640e+01 3.07836e+00 45 2024 4 nan nan 0