Marsh msl_pressure 1969 - - - - - 992.0 997.0 996.0 987.0 981.0 985.0 989.0 1970 993.0 986.0 994.0 983.0 989.0 996.0 993.0 994.0 990.0 983.0 - 990.0 1971 988.7 989.1 987.2 990.7 1002.5 993.9 999.7 984.1 989.6 990.4 983.7 994.0 1972 994.0 991.0 991.0 987.0 993.9 994.3 990.5 1001.5 989.0 993.9 987.0 992.4 1973 992.6 986.3 984.0 981.0 988.7 997.3 1002.6 987.5 988.9 992.6 989.4 985.5 1974 992.9 991.0 989.3 990.9 994.0 1004.9 989.6 993.5 983.9 987.3 994.1 993.7 1975 993.7 987.3 986.5 990.0 992.3 999.4 997.2 991.0 992.8 984.3 986.3 985.4 1976 994.6 990.5 995.2 987.7 985.7 995.2 982.8 982.1 989.1 992.9 997.5 1001.9 1977 995.4 988.1 991.4 991.3 984.7 994.0 1002.0 993.3 983.3 988.8 988.8 997.0 1978 990.3 992.8 994.7 994.5 1003.7 985.5 1003.3 986.8 995.7 986.0 995.8 988.9 1979 996.3 990.4 996.5 985.9 999.3 991.7 990.7 990.2 994.1 987.4 995.1 998.0 1980 992.9 995.1 993.1 997.4 998.2 987.2 1001.9 997.2 994.8 992.0 987.4 995.2 1981 994.3 985.5 1001.9 - 994.8 997.4 997.9 991.8 992.0 992.0 984.0 989.2 1982 992.9 989.1 985.1 987.5 993.5 1003.8 991.7 998.4 994.6 987.4 994.1 996.3 1983 995.6 989.6 991.3 1000.8 1001.6 995.3 990.9 992.9 994.9 986.8 983.9 988.0 1984 990.0 989.1 998.2 987.3 994.1 1000.7 1001.6 993.0 1000.0 992.3 985.8 1002.0 1985 996.7 985.9 990.2 989.0 996.2 1005.0 987.0 986.0 986.3 995.3 989.7 982.6 1986 987.2 990.0 990.8 990.0 999.3 983.5 987.4 985.6 987.6 993.2 981.9 984.0 1987 989.7 993.1 984.6 989.5 997.0 992.7 993.8 1000.8 989.3 989.3 983.5 988.2 1988 993.8 991.2 988.1 992.7 998.3 995.5 991.4 1000.5 992.9 1001.0 983.3 984.0 1989 992.3 987.8 989.1 992.4 986.4 984.8 996.3 998.9 991.6 984.1 984.7 991.9 1990 991.0 992.7 985.8 991.0 1002.9 984.8 993.4 981.0 993.8 977.8 973.6 988.3 1991 988.2 992.2 990.6 992.2 988.5 991.5 993.0 988.2 998.0 986.0 988.8 998.6 1992 990.7 987.8 990.8 995.1 999.0 1002.1 997.1 991.4 988.4 986.4 994.6 995.8 1993 995.7 994.7 989.4 989.1 989.9 992.9 994.2 989.0 985.4 985.5 986.2 985.6 1994 985.5 986.5 993.8 995.7 996.7 997.2 995.3 989.6 981.6 989.0 994.2 989.8 1995 993.3 992.8 984.3 992.0 992.5 990.1 989.6 995.2 989.3 994.6 983.0 987.0 1996 991.7 990.8 986.7 996.9 986.7 992.7 991.2 990.6 996.1 986.5 978.9 989.3 1997 988.8 994.1 990.7 985.8 1000.1 1002.9 990.5 986.6 994.7 991.7 997.6 999.8 1998 986.6 995.4 990.9 996.6 1002.0 996.8 979.0 986.1 990.7 981.8 985.5 983.0 1999 990.5 984.9 995.7 989.2 - 997.0 990.8 989.9 992.0 986.3 988.0 983.8 2000 982.2 995.8 1002.0 988.7 - 999.0 1005.6 992.7 1002.4 - 995.1 989.4 2001 989.4 988.1 - 987.9 999.3 992.3 996.5 982.4 991.6 985.7 - - 2002 - 987.1 992.1 - 993.7 991.3 994.9 999.6 1002.8 989.5 990.3 990.1 2003 993.0 987.3 997.4 994.6 991.5 996.9 984.8 - - 984.6 984.6 996.6 2004 986.6 998.3 - - 993.8 989.1 991.4 991.6 980.1 - - 991.5 2005 986.8 987.5 991.8 984.6 994.8 996.4 997.8 992.3 999.3 994.2 991.1 995.2 2006 - - 981.6 992.5 - - - 1000.2 991.8 - 982.7 985.4 2007 990.4 987.5 989.5 989.9 - - - 987.5 998.1 983.7 990.7 984.9 2008 987.7 989.9 991.7 987.9 993.5 993.5 995.8 992.1 1001.5 - 984.3 982.0 2009 985.6 - - - - - - - - - - -