[ps2]

People have asked for total daily dose stats in Loop, and some check in the morning whether the day is running ahead of their usual insulin.

Statistics page: new Daily Insulin section

• Cards:
  • Average per day.
  • Today so far, with "Usually X U by ".
  • Basal, with % of total and the scheduled basal total.
  • Bolus, with % of total and the automatic part.
• A chart of each calendar day, stacked by basal, automatic bolus and manual bolus, with a dashed line at the average. It follows the 7/14/30/90-day picker. Today stays out of the chart until the day is over.

Insulin Delivery Log

• Adds "usually X U by " under the total since midnight.

How the usual amount works

• It is the median of the last 14 days, each measured from midnight to the same clock time. Meals and dawn-phenomenon basal therefore compare like with like, rather than against a straight-line share of the daily average.
• It needs at least 3 days of history.
• It stays at the same clock time across daylight saving changes.

Calculation

• InsulinDeliveryHistory computes all of these from normalized doses. Time not covered by a basal record counts at the scheduled basal rate, as the existing total does.
• Doses come from the ~90-day on-device cache, so no new storage is needed.
• Today's total (totalDeliveredToday()) now uses it too. The old calculation trimmed each dose individually and kept the full volume of zero-duration boluses. A dose logged yesterday evening was still in the display fetch window, so it counted toward today. This may account for some of the Loop-higher-than-Apple-Health reports.

Tests: 9 new InsulinDeliveryHistoryTests:

• the zero-duration bolus case;
• a bolus spanning midnight;
• gaps at the scheduled rate and suspends;
• overlapping basal records;
• the automatic/manual split;
• skipping a partially covered first day;
• the same-clock-time median, including a DST change.

Screenshots are from the simulator with seeded history (the generator overdoses, hence ~64 U/day):

Statistics	Insulin Delivery Log