Coverage & definitions

ESPN completed-game schedules and game boxes. Opponent conference is the conference at the time of the game, from CFBD. Kickoff buckets use each stadium’s local time: before 3 PM, 3–5:59 PM, and 6 PM onward. Calendar weeks use ISO numbering; postseason games have their own season-week bucket.

Kickoff weather uses the nearest IEM airport station within 25 miles and its latest observation at or before listed kickoff, no older than 60 minutes. These are nearby observations, not on-field measurements. Indoor/roofed venues are kept separate; unknown weather and unknown kickoff times are not treated as clear or noon.

Each team’s selected split is compared with all its other games in the same season range, with no overlap. For a specific split, unknown values remain in the other-games group unless Unknown is selected; they are counted in the sample cards. Selecting All games leaves the other-games group empty.

Rates pool their underlying attempts or plays separately within each sample. Other averages use available values; cells show coverage when incomplete. Difference is selected minus other, with percentage-point differences for third-down percentage. Totals reflect sample size as well as production. These samples span different coaches, rosters and opponents and describe past results, not a weather effect.

Saved Oct 14, 2026 · 11:39 AM EDT · 1 data requests returned no usable data; coverage may be partial. · Iowa Environmental Mesonet · cfbfastR