GC41 temperature
1984       -       -       -       -       -       -       -       -       -       -   -38.0       -
1985   -25.1   -37.7       -       -       -       -       -       -       -       -       -       -
1986       -   -26.9       -   -52.6   -54.3   -55.8   -51.3   -49.5   -49.1   -42.0   -34.1       -
1987   -23.6   -35.2   -44.2       -   -53.0       -       -   -60.2       -   -40.8   -36.6       -
1988   -24.8       -   -47.1       -   -50.0   -53.3   -55.5       -       -       -   -37.0   -26.1
1989       -   -36.5       -       -   -60.1   -59.6   -50.8   -52.9   -43.9       -   -37.0   -22.3
1990   -25.0   -34.6   -45.6   -49.5   -53.6       -   -45.8       -       -       -       -       -
1991   -24.1   -31.0   -42.6   -43.5   -56.8   -45.2       -   -45.1       -   -44.1   -34.9       -
1992   -24.8       -   -42.7       -   -53.4   -51.1   -51.3       -   -56.2   -49.9   -35.3   -27.3
1993   -24.1       -   -44.0   -51.8   -59.2   -54.7       -       -   -48.7   -46.1   -35.8       -
1994   -24.9   -35.1       -       -   -57.7       -       -       -       -       -       -       -
1995       -   -36.0   -42.8       -   -58.0   -47.0   -45.7   -47.5   -48.2   -47.1   -34.0   -27.1
1996       -   -35.9   -41.2   -47.3   -54.9   -54.8   -47.7   -44.3   -47.8   -45.1       -       -
1997   -24.8   -33.7   -45.0   -51.6   -56.0   -48.4   -56.0   -56.8   -51.1       -   -30.2   -23.9
1998   -26.8   -30.7   -48.7   -49.7   -52.0   -53.3   -54.6   -52.7   -53.5   -44.5   -35.2   -23.8
1999   -26.5   -34.6   -47.1       -   -57.3   -48.2   -56.7   -54.0   -54.7   -45.3   -35.8   -29.7
2000   -27.5   -33.9       -       -       -       -       -       -   -44.7   -45.7       -       -
2001   -24.3   -34.7   -41.3   -49.0   -48.1       -       -       -       -       -       -   -28.1
2002       -   -34.3   -38.8   -44.6   -48.9   -48.1   -47.6   -52.7   -50.6   -48.6   -40.3   -33.3
2003       -       -       -       -       -       -       -       -       -       -       -       -
2004       -       -       -       -       -       -       -       -       -       -       -       -
2005       -   -33.7       -   -46.2       -       -       -   -50.0       -       -       -       -
2006       -       -       -       -       -       -       -       -       -       -       -       -
2007       -       -       -       -       -       -       -       -       -       -       -       -
2008       -       -       -       -       -       -       -       -       -       -       -       -
2009       -       -       -       -       -       -       -       -       -       -       -       -