Is it possible to graph custom data values?

{
_index: test
_type: perfdata
_id: 4
_version: 1
_score: 1
_source: {
@host: elma-es
@timestamp: 2013-05-08T00:10:00.044150+02:00
@check: test
@DaTa: 5
}
}

I would like to graph the value of the data field which could be some nagios performance data.