Get an analytics time series

Returns one traffic time series bucketed by unit (year, month, day, hour, or minute). series selects which: pageviews returns parallel pageviews and sessions arrays with one point per time bucket (and accepts compare — prev or yoy — to request comparison data for the previous period or year), while events returns tracked custom-event counts as one events point per event name per time bucket. Only the requested series' fields are present in the response. startAt and endAt are Unix epoch milliseconds; timezone is an IANA name (e.g. America/New_York) that controls bucket boundaries; optional filter parameters narrow the data. The series is capped to the most recent maxPoints time buckets (default 30, max 500); a truncated field reports when the cap was applied. Requires a plan that includes analytics (403 otherwise); empty until the website is published and has traffic.