Name: NH polar cap ozone
Units: DU
Month: April
Source: toms+omi+omps
Missing: -9999.0
Year      Data   Minumum   Maximum
1979    441.30    423.70    454.61
1980    455.55    440.50    471.24
1981    426.23    413.60    438.70
1982    455.83    445.09    464.83
1983    423.76    406.45    439.07
1984    440.40    422.64    460.63
1985    445.14    422.32    479.95
1986    432.42    412.19    455.58
1987    428.70    416.53    437.11
1988    449.38    422.15    476.00
1989    426.72    406.63    451.72
1990    381.57    352.99    394.15
1991    432.29    417.20    446.84
1992    406.86    394.31    424.04
1993    371.38    350.43    377.10
1994    428.47    410.05    442.72
1995  -9999.00  -9999.00  -9999.00
1996  -9999.00  -9999.00  -9999.00
1997    354.55    338.18    380.22
1998    433.42    423.60    447.99
1999    425.26    412.92    437.30
2000    394.73    385.03    404.16
2001    424.83    414.86    440.92
2002    415.35    396.48    428.39
2003    418.73    394.00    444.14
2004    408.58    400.94    415.43
2005    418.45    398.37    438.05
2006    421.15    397.47    436.19
2007    392.26    377.52    407.40
2008    400.68    372.19    419.89
2009    409.27    393.72    422.09
2010    418.08    404.89    439.43
2011    399.78    352.75    414.44
2012    418.86    401.17    434.83
2013    417.40    409.20    425.65
2014    426.41    412.18    445.31
2015    442.14    426.07    454.32
2016    405.27    377.46    432.48
2017    414.87    401.27    428.54
2018    422.49    413.64    428.48
2019    428.33    413.53    445.62
2020    344.32    326.98    368.72
2021    396.82    387.22    410.31
2022    418.09    407.32    427.48
2023    412.58    398.42    429.27