LGB20 temperature
1991       -   -31.5   -41.4   -47.3   -52.4   -45.6   -43.7   -47.7   -50.8   -45.4   -33.4   -22.8
1992   -25.3   -30.8   -42.3   -47.0   -49.8   -49.1   -51.2       -   -52.6   -44.5   -32.6   -27.4
1993   -23.6   -33.6   -42.7   -48.9   -50.8   -52.2   -52.0   -51.9   -51.5   -43.7   -34.2   -25.9
1994   -25.2   -34.2   -45.8   -48.3   -52.8   -43.7   -47.7   -52.2   -48.0   -42.2   -34.0   -25.8
1995   -28.1   -34.1   -42.3   -46.6   -52.5   -51.1   -42.5   -52.2   -51.6   -43.6   -32.3   -24.7
1996       -   -31.9   -42.7   -47.0   -54.4   -50.9   -48.5   -44.7   -45.2   -44.3   -32.0   -24.9
1997   -25.9   -32.6   -41.9   -48.7   -52.6   -48.5   -53.7   -52.4   -50.3       -   -30.7   -22.3
1998   -26.4   -32.8   -43.2   -50.7   -48.3       -   -51.2   -48.8   -50.2       -   -31.6   -25.1
1999   -25.9       -       -   -52.4   -51.3   -45.1   -52.7   -48.7   -49.2   -45.0   -33.8   -27.4
2000       -   -35.9       -       -       -   -47.1   -51.1   -50.4       -   -46.3       -       -
2001       -   -32.7   -42.6   -48.4   -48.9   -47.7       -       -       -       -       -   -24.4
2002       -   -35.0   -43.1       -   -44.5   -47.3   -48.6   -52.5       -   -42.5   -34.7   -25.7
2003       -       -       -       -       -   -50.3       -       -       -       -       -       -
2004       -       -       -       -       -       -       -       -       -       -       -       -
2005       -       -       -       -       -       -       -       -       -       -       -       -
2006       -       -       -       -       -       -       -       -       -       -       -       -
2007       -       -       -       -       -       -       -       -       -       -       -       -
2008       -       -       -       -       -       -       -       -       -       -       -       -
2009       -       -       -       -       -       -       -       -       -       -       -       -