anchor.diff:             max(a_f),
              avg(a_i),
              avg(a_f),
  +           per(a_f, 50),
  +           per(a_f, 75),
              count(*))
   ----
   
  
positive.code: * `end`: (Mandatory) The end of the time series expressed in Solr date or date math syntax.
  * `gap`: (Mandatory) The time gap between time series aggregation points expressed in Solr date math syntax.
  * `format`: (Optional) Date template to format the date field in the output tuples. Formatting is performed by Java's SimpleDateFormat class.
  * `metrics`: (Mandatory) The metrics to include in the result tuple. Current supported metrics are `sum(col)`, `avg(col)`, `min(col)`, `max(col)` and `count(*)`
  
  === timeseries Syntax
  
  
negative.code:       max(a_f),
        avg(a_i),
        avg(a_f),
        per(a_f, 50),
        per(a_f, 75),
        count(*))
  ----
  
  