Name: NH minimum ozone
Units: DU
Month: April
Source: toms+omi+omps
Missing: -9999.0
Year      Data   Minumum   Maximum
1979    293.19    273.00    313.00
1980    292.87    273.00    309.00
1981    300.80    277.00    320.00
1982    300.57    275.00    325.00
1983    291.23    269.00    308.00
1984    299.30    284.00    316.00
1985    273.53    250.00    291.00
1986    299.17    279.00    379.00
1987    291.07    264.00    318.00
1988    275.33    240.00    298.00
1989    285.97    272.00    304.00
1990    286.23    243.00    307.00
1991    299.20    272.00    387.00
1992    281.67    244.00    304.00
1993    271.10    254.00    284.00
1994    281.04    258.00    296.00
1995  -9999.00  -9999.00  -9999.00
1996  -9999.00  -9999.00  -9999.00
1997    257.53    226.00    277.00
1998    287.03    265.00    302.00
1999    277.83    246.00    297.00
2000    273.87    238.00    292.00
2001    282.23    272.00    300.00
2002    276.50    259.00    292.00
2003    286.37    261.00    305.00
2004    271.23    243.00    291.00
2005    279.83    260.00    297.00
2006    275.87    262.00    290.00
2007    277.07    259.00    307.00
2008    276.50    259.00    301.00
2009    290.73    266.00    305.00
2010    292.87    271.00    341.00
2011    255.67    218.00    353.00
2012    273.60    255.00    298.00
2013    281.60    262.00    305.00
2014    296.17    276.00    311.00
2015    285.24    266.00    300.00
2016    294.57    270.00    312.00
2017    270.27    244.00    301.00
2018    289.13    258.00    301.00
2019    277.40    259.00    291.00
2020    237.87    212.00    275.00
2021    279.53    252.00    297.00
2022    278.10    260.00    294.00
2023    271.50    254.00    283.00