Each card is one plan's history for one metric (see the -time / -latency / -time_to_yield / -pause_time suffix). Time cards: total time per benchmark (big number/line colored green improvement, red regression, gray neutral), with mutator/STW time as thin informational overlays. Latency cards: 50/90/99/99.9/99.99th percentile tail latency per benchmark, log scale. Time-to-yield/pause-time cards: 99.99th percentile per benchmark (same coloring), with the 50th percentile as a thin informational overlay, log scale. Every plan has all four; less commonly-relevant ones start collapsed below - click "Hide"/"Show" on any card to move it, your choice is remembered in this browser.
Nothing selected in a dropdown means no filter on that axis. Filtering only controls what's on this page right now - it doesn't change any card's show/hide preference, and a hidden card that passes the filter still appears under "More metrics" below.