Series 2
"Series 2" is a mirror option of "Series 1", which allows the user to define an extra criterion on the top of the already pre-defined criteria in the "Date range" and "Series 1". It has the exact same parameters as "Series 1" plus an extra one called "None" which is mainly used to limit the complexity of information displayed on the chart and data table. Note: You can't set the same criterion in both Series 1 and 2 e.g. if you select "Day of week" in Series 1 you won't be able to select it from the dropdown list in Series 2.