Using the BigQuery Export schema, which of the following fields are available in BigQuery?

The BigQuery Export schema for Google Analytics 360 includes customDimensions, hitNumber, and clientId. These fields provide detailed data about user interactions and custom data points. customDimensions allows you to analyze specific custom data you've configured. hitNumber tracks the sequence of hits within a session, crucial for understanding user flow. clientId uniquely identifies a user across sessions. While landing page data is available, it's typically within hit-level records, not as a standalone top-level field in the same way as custom dimensions or client ID. Clicks and impressions are generally associated with advertising platforms (like Google Ads) rather than directly being top-level fields in the core GA4 BigQuery export schema, which focuses on website/app interaction data. Custom channel groups and time on page are derived metrics or categorizations, not direct fields in the raw export schema.