Size of the ozone hole
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ABCDEFGHIJKL
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Approximate maximum area of the Antarctic ozone hole: 1979-2006
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Million square kilometres
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Maximum 1average 2maximum
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19791.090.131.09
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19803.271.933.27
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19812.410.942.41
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198210.806.2710.80
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198312.2410.0112.24
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198414.6512.114.65
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198518.7915.7618.79
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198614.3712.8114.37
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198722.4520.6422.45
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198813.7610.4613.76
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198921.7320.2621.73
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199021.0519.4221.05
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199122.6019.7522.60
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199224.9022.9124.90
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1993325.0724.0225.07
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1994324.5623.4324.56
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1995......
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199626.9623.7726.96
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199725.1322.6925.13
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199828.2126.5428.21
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199926.0923.8626.09
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200030.3127.6130.31
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2001426.5025.0826.50
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2002421.74r15.2821.74
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2003428.51r27.1128.51
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2004422.76r19.9522.76
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2005526.8624.7826.86
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2006529.4625.8129.46
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Source: NASA and the Royal Netherlands Meteorological Institute (KNMI)
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Notes:1Maximum area interior to the 220 Dobson Unit total ozone contour over Antartica during
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springtime ozone depletion, measured by Total Ozone Mapping Spectrometer instruments
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2Average is over a 30 day period
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3from Meteor 3 TOMS
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3Ozone hole area for 2001-2004 corrected for EP TOMS instrument degradation
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4.00Area based on Aura Ozone Monitoring Instrument (OMI)
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r=revised figure
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