Name: Total column ozone Units: DU Source: TOMS+MERRA, OMI+MERRA, OMPS+MERRA-2, OMPS+GEOS5FP Missing: -9999.0 Year 90S--60S 60S--30S 30S--10S 10S--10N 10N--30N 30N--60N 60N--90N 1979 357.07 367.38 288.70 261.05 268.23 298.02 304.42 1980 312.70 345.98 281.40 274.78 273.51 299.35 301.63 1981 305.58 364.54 292.05 265.22 273.15 298.11 303.24 1982 305.99 345.75 282.60 272.56 268.47 298.37 301.43 1983 291.19 350.95 289.91 263.53 268.47 292.42 295.96 1984 283.38 349.99 286.00 265.61 265.22 295.95 301.71 1985 252.05 327.30 278.28 271.65 271.10 291.45 296.99 1986 280.06 350.12 286.01 262.34 268.98 292.09 295.61 1987 224.36 340.58 282.97 274.78 265.50 298.67 302.96 1988 312.75 355.24 289.02 264.03 266.58 289.72 291.06 1989 242.55 348.31 295.74 268.18 275.45 293.74 298.76 1990 238.20 333.73 281.11 275.32 271.85 289.55 295.82 1991 257.35 354.90 297.29 260.95 271.96 292.69 293.00 1992 254.86 330.00 274.10 269.65 259.94 285.74 293.19 1993 248.42 324.06 274.50 250.48 254.17 280.04 -NaN 1994 231.02 337.13 276.31 262.65 259.50 285.29 290.17 1995 -9999.00 -9999.00 -9999.00 -9999.00 -9999.00 -9999.00 -9999.00 1996 234.06 339.06 283.43 261.95 262.22 285.57 288.50 1997 221.95 324.92 276.61 266.38 266.28 290.28 286.92 1998 214.20 336.29 287.36 270.83 266.15 290.47 305.75 1999 214.87 333.01 286.21 271.86 270.91 289.85 297.12 2000 259.73 339.04 287.96 258.57 265.03 287.34 289.62 2001 223.44 335.12 288.64 271.36 265.40 292.79 300.89 2002 306.06 345.65 282.78 267.62 267.02 291.47 278.73 2003 247.88 342.12 283.81 261.20 264.58 287.59 296.07 2004 267.63 330.69 276.77 267.45 268.51 286.49 287.47 2005 247.47 336.47 281.04 254.03 259.64 280.88 290.10 2006 210.82 315.45 268.85 261.18 265.22 289.33 297.91 2007 263.02 340.58 281.01 254.52 261.22 282.17 295.62 2008 227.96 323.47 274.33 263.30 264.40 284.80 287.33 2009 257.18 341.24 280.25 252.89 261.81 288.09 293.02 2010 240.69 327.00 282.61 275.95 266.11 291.83 303.95 2011 214.16 337.04 287.21 259.94 266.28 282.40 294.57 2012 296.64 336.84 277.46 254.80 259.80 284.03 289.67 2013 269.56 322.28 271.77 267.82 266.87 286.12 300.76 2014 259.92 337.79 283.70 258.74 266.59 287.45 301.21 2015 188.69 318.26 276.42 271.92 268.03 293.47 301.79 2016 255.48 329.83 272.01 266.62 261.26 288.16 296.44 2017 273.66 341.98 285.09 258.89 266.32 289.03 296.88