指标：

sessions, average_session_duration, bounce_rate,

sessions_with_cart_additions, added_to_cart_rate, sessions_that_reached_checkout,

reached_checkout_rate, sessions_that_completed_checkout, completed_checkout_rate,

conversion_rate

维度：

landing_page_url，utm_source，utm_term，utm_medium，utm_content，utm_campaign，referring_platform，referring_channel，