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January | 1.071 ± 0.038 | 0.959 ± 0.034 | 0.990 ± 0.048 | 1.024 ± 0.037 |
February | 0.985 ± 0.020 | 0.890 ± 0.019 | 0.918 ± 0.025 | 0.941 ± 0.019 |
March | 0.954 ± 0.050 | 0.870 ± 0.043 | 0.898 ± 0.061 | 0.910 ± 0.047 |
April | 1.025 ± 0.064 | 0.940 ± 0.059 | 0.970 ± 0.045 | 0.979 ± 0.061 |
May | 1.147 ± 0.050 | 1.057 ± 0.045 | 1.101 ± 0.046 | 1.098 ± 0.048 |
June | 1.312 ± 0.099 | 1.215 ± 0.091 | 1.270 ± 0.102 | 1.258 ± 0.096 |
July | 1.304 ± 0.019 | 1.217 ± 0.019 | 1.272 ± 0.021 | 1.254 ± 0.019 |
August | 1.676 ± 0.119 | 1.562 ± 0.053 | 1.616 ± 0.060 | 1.610 ± 0.057 |
September | 1.687 ± 0.111 | 1.560 ± 0.104 | 1.627 ± 0.116 | 1.618 ± 0.107 |
October | 1.718 ± 0.114 | 1.577 ± 0.145 | 1.642 ± 0.147 | 1.642 ± 0.137 |
November | 1.202 ± 0.038 | 1.084 ± 0.036 | 1.126 ± 0.048 | 1.147 ± 0.035 |
December | 1.187 ± 0.608 | 1.087 ± 0.617 | 1.100 ± 0.622 | 1.136 ± 0.587 |
Mean | 1.272 ± 0.113 | 1.168 ± 0.110 | 1.211 ± 0.117 | 1.218 ± 0.108 |