Electronic Ear-Tag Temperature and Estrus Event Records

Sampling intervals are non-uniform. The file estrus_event_labels_and_sow_ids.pdf contains 521 positive sow-interval entries organized by date and twice-daily observation interval (08:00–09:00 and 15:00–16:00). Farm personnel performed manual estrus checks at approximately 08:30 and 15:30.

The listed interval therefore represents the recorded detection time rather than the exact biological onset of estrus. Sow identifiers correspond to sSowsNo; numeric identifiers should be handled as strings. Not every labeled entry had sufficient matching temperature history to generate a retained analytical window.

For the associated study, valid ear-temperature observations were resampled to hourly means. Each positive sample comprised the 48 hourly temperature values preceding a recorded positive interval; negative samples were equal-length windows from monitored periods without a recorded estrus event. Windows with five or more missing hours were excluded, whereas retained windows with fewer than five missing values were forward-filled.

Although the raw workbook contains step-count readings, the reported model used temperature only.