Name: Total column ozone Units: DU toms+omi+omps Missing: -9999.0 Month: May Year Global 90S--60S 60S--30S 30S--10S 10S--10N 10N--30N 30N--60N 60N--90N 1979 308.10 302.81 303.45 267.62 261.67 296.43 368.96 404.89 1980 306.84 324.74 304.56 256.04 265.51 287.76 369.92 409.04 1981 306.26 310.96 302.17 263.54 262.25 292.13 369.67 394.41 1982 307.07 295.06 298.75 265.49 259.19 296.43 371.07 412.95 1983 300.71 309.49 299.18 262.19 258.08 286.55 355.25 389.93 1984 302.88 292.71 303.07 262.28 252.42 289.37 365.31 399.58 1985 298.04 293.35 287.45 253.66 268.63 285.14 352.47 396.37 1986 297.69 291.37 293.97 255.59 256.29 289.21 353.09 390.14 1987 301.26 295.16 289.19 259.16 253.15 292.81 368.21 402.56 1988 299.27 293.61 289.84 260.76 262.48 285.33 356.76 393.96 1989 304.00 300.33 295.83 267.90 263.51 297.97 357.31 390.05 1990 299.46 294.87 293.35 258.86 273.53 289.13 348.55 375.88 1991 302.10 293.89 291.04 258.68 260.34 295.54 365.78 392.90 1992 296.31 286.91 298.09 253.81 254.87 290.31 348.51 379.13 1993 283.07 284.97 279.02 250.28 252.50 274.29 327.73 351.59 1994 -9999.00 -9999.00 -9999.00 -9999.00 -9999.00 -9999.00 -9999.00 -9999.00 1995 -9999.00 -9999.00 -9999.00 -9999.00 -9999.00 -9999.00 -9999.00 -9999.00 1996 -9999.00 -9999.00 -9999.00 -9999.00 -9999.00 -9999.00 -9999.00 -9999.00 1997 288.57 293.87 278.77 248.82 261.85 276.93 334.84 380.78 1998 298.13 285.63 291.81 255.09 254.14 288.06 357.78 402.18 1999 296.11 298.13 282.88 255.16 268.57 285.68 347.54 387.15 2000 295.52 292.69 281.88 262.75 264.12 289.84 344.20 376.22 2001 296.97 292.99 289.96 259.15 253.46 290.08 351.09 392.00 2002 297.75 286.48 290.50 254.18 268.77 287.37 351.83 382.05 2003 299.11 292.42 285.26 261.03 258.85 293.98 354.97 397.60 2004 295.71 297.76 280.97 252.83 267.98 286.30 349.33 387.71 2005 289.99 293.95 283.94 252.95 247.51 282.91 344.12 374.28 2006 290.66 297.77 274.80 246.69 260.48 282.96 343.97 388.88 2007 290.69 282.04 283.34 255.79 251.37 283.08 341.16 382.68 2008 289.94 294.29 283.87 250.63 265.34 277.21 337.27 365.56 2009 291.99 288.66 286.45 254.89 254.53 282.51 342.67 380.86 2010 297.95 299.16 290.79 257.92 248.74 284.90 363.67 394.20 2011 291.91 294.62 283.49 260.37 257.75 282.79 338.75 373.19 2012 292.19 290.93 282.88 259.53 253.58 288.68 340.31 374.98 2013 294.15 298.79 284.54 250.45 261.18 280.99 347.15 397.32 2014 294.71 299.24 289.43 257.85 255.18 286.65 344.68 382.25 2015 296.48 300.45 288.64 251.71 255.37 289.08 353.72 393.22 2016 291.16 294.21 291.96 248.45 253.82 278.27 345.58 370.98 2017 293.15 286.59 285.81 258.84 255.86 283.97 344.89 378.13 2018 296.50 301.41 292.84 259.39 249.08 288.07 348.16 396.48 2019 293.50 289.13 281.86 252.08 257.49 278.66 351.18 400.53 2020 287.95 285.35 285.64 251.12 249.65 282.17 336.89 365.03 2021 292.74 289.04 284.19 257.68 255.09 283.77 342.75 386.34 2022 291.74 286.25 282.43 253.24 253.87 286.20 345.04 380.02 2023 292.52 280.10 283.65 259.34 258.30 286.10 339.75 379.69