谷歌给搜索出来的链接添加的 gaa_at, gaa_n, gaa_ts, gaa_sig 是什么意思？

好像不少新闻网站都会添加，比如这个链接来自

`.../interactive/2025/02/21/upshot/house-gop-budget-blueprint.html?utm_source=newsshowcase&utm_medium=gnews&utm_campaign=CDAQ-Jat4q6Li8jIARif1afLlfD1jpIBKg8IACoHCAowjuuKAzCWrzw&utm_content=rundown&gaa_at=g&gaa_n=AerBZYPDSezgnkDiDqYTm7liJdg7GeJQ8V9HJDysDWtnrc4eN85dw9lGtRWgWdbHXts7aKXi39Opsw%3D%3D&gaa_ts=67bf20d0&gaa_sig=q4IvKL1fN08Ds541FdnDyt08hIal7Vab4VSrZ5IWHZF3DiwqKeHXXQshOArBHovvbfu_rUn9RTEBV8cgthnsQg%3D%3D`