{"Sample.Date":"Jan 1990","Month":"Jan","Year":"1990","Arsenic.ppb":4}
{"Sample.Date":"Apr 1990","Month":"Apr","Year":"1990","Arsenic.ppb":7.2}
{"Sample.Date":"Jul 1990","Month":"Jul","Year":"1990","Arsenic.ppb":3.1}
{"Sample.Date":"Oct 1990","Month":"Oct","Year":"1990","Arsenic.ppb":3.5}
{"Sample.Date":"Jan 1991","Month":"Jan","Year":"1991","Arsenic.ppb":4.4}
{"Sample.Date":"Apr 1991","Month":"Apr","Year":"1991","Arsenic.ppb":5.1}
{"Sample.Date":"Jul 1991","Month":"Jul","Year":"1991","Arsenic.ppb":2.2}
{"Sample.Date":"Oct 1991","Month":"Oct","Year":"1991","Arsenic.ppb":6.3}
{"Sample.Date":"Jan 1992","Month":"Jan","Year":"1992","Arsenic.ppb":6.5}
{"Sample.Date":"Apr 1992","Month":"Apr","Year":"1992","Arsenic.ppb":7.5}
{"Sample.Date":"Jul 1992","Month":"Jul","Year":"1992","Arsenic.ppb":5.8}
{"Sample.Date":"Oct 1992","Month":"Oct","Year":"1992","Arsenic.ppb":5.9}
{"Sample.Date":"Jan 1993","Month":"Jan","Year":"1993","Arsenic.ppb":5.7}
{"Sample.Date":"Apr 1993","Month":"Apr","Year":"1993","Arsenic.ppb":4.1}
{"Sample.Date":"Jul 1993","Month":"Jul","Year":"1993","Arsenic.ppb":3.8}
{"Sample.Date":"Oct 1993","Month":"Oct","Year":"1993","Arsenic.ppb":4.3}