time | txx | normalised |
1950-01 | 19.3 | -1.58621 |
1950-02 | 21.7 | -1.19524 |
1950-03 | 24 | -0.82057 |
1950-04 | 32.6 | 0.580387 |
1950-05 | 32.5 | 0.564096 |
1950-06 | 31.6 | 0.417485 |
1950-07 | 31.5 | 0.401194 |
1950-08 | 32.9 | 0.629257 |
1950-09 | 31.8 | 0.450065 |
1950-10 | 29.7 | 0.107971 |
1950-11 | 27.7 | -0.21783 |
1950-12 | 23.7 | -0.86944 |
1951-01 | 21 | -1.30928 |
1951-02 | 21.2 | -1.2767 |
1951-03 | 26.5 | -0.41332 |
> dat$month = substr(dat$time, 6, 7) > head(dat) time txx normalised month 1 1950-01 19.3 -1.586210 01 2 1950-02 21.7 -1.195240 02 3 1950-03 24.0 -0.820570 03 4 1950-04 32.6 0.580387 04 5 1950-05 32.5 0.564096 05 6 1950-06 31.6 0.417485 06 > dat = dat[dat$month == "01", ] > head(dat) time txx normalised month 1 1950-01 19.3 -1.58621 01 13 1951-01 21.0 -1.30928 01
> dat$month = substr(dat$time, 6, 7) > head(dat) time txx normalised month 1 1950-01 19.3 -1.586210 01 2 1950-02 21.7 -1.195240 02 3 1950-03 24.0 -0.820570 03 4 1950-04 32.6 0.580387 04 5 1950-05 32.5 0.564096 05 6 1950-06 31.6 0.417485 06 > dat = dat[dat$month == "01", ] > head(dat) time txx normalised month 1 1950-01 19.3 -1.58621 01 13 1951-01 21.0 -1.30928 01
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