Halley_6a 00Z temperature
2018    -5.1   -11.5   -12.8   -19.0   -21.1   -21.2   -28.1   -27.5   -25.8   -26.7   -10.3    -5.3
2019    -5.7   -11.2   -16.1   -22.7   -21.1   -31.1   -30.2   -30.7   -30.9   -22.9   -10.4    -3.6
2020    -3.6   -11.6   -19.0   -17.8   -29.0   -27.8   -31.0   -35.0   -26.5   -23.1    -9.6    -5.2
2021    -8.3   -11.3   -11.6   -20.9   -21.3   -34.9   -32.8   -33.4   -25.2   -21.7   -11.9    -5.5
2022    -5.2    -9.2   -18.0   -19.8   -22.6   -23.8   -28.4   -34.8   -27.1   -18.8   -14.9    -6.6
2023    -6.6   -12.8   -14.8   -12.3   -24.1   -21.6   -23.4   -25.2   -23.1   -15.9    -7.7    -6.6
2024    -6.0    -8.2   -17.8   -18.8       -       -       -       -       -       -       -       -