Name: NH polar cap ozone Units: DU Month: December Source: toms+omi+omps Missing: -9999.0 Year Data Minumum Maximum 1979 352.95 334.63 376.58 1980 321.43 310.78 334.17 1981 358.17 341.51 385.94 1982 320.00 306.86 338.54 1983 327.26 312.99 346.99 1984 344.14 325.16 386.31 1985 313.97 295.00 340.20 1986 331.31 319.09 352.06 1987 381.70 362.16 396.16 1988 309.99 304.91 319.91 1989 321.66 314.71 330.80 1990 329.01 312.06 347.35 1991 311.63 294.57 326.22 1992 317.27 306.35 324.65 1993 351.92 333.95 387.23 1994 -9999.00 -9999.00 -9999.00 1995 -9999.00 -9999.00 -9999.00 1996 339.43 309.43 359.59 1997 344.72 306.38 377.21 1998 -9999.00 -9999.00 -9999.00 1999 317.71 308.20 329.30 2000 348.73 331.54 369.07 2001 343.70 324.13 383.80 2002 308.94 296.92 328.25 2003 331.59 306.83 359.41 2004 325.12 317.72 329.76 2005 326.36 310.57 343.76 2006 336.86 306.52 365.10 2007 327.83 314.35 338.91 2008 333.18 314.14 344.78 2009 345.04 333.99 357.43 2010 333.83 320.65 345.87 2011 328.94 309.54 365.32 2012 335.13 317.23 351.65 2013 311.43 302.87 325.29 2014 352.07 333.48 374.57 2015 331.55 321.55 347.64 2016 341.27 327.55 356.06 2017 343.73 319.77 372.47 2018 357.49 337.11 392.46 2019 331.95 307.19 360.07 2020 336.51 306.58 355.48 2021 331.12 319.14 350.94 2022 332.80 310.38 348.02 2023 345.66 312.64 373.54