Step 1
Read the six-month card
- Read the six-month card
- Check the longer chart's window
- Unknown history is not recorded zero
Weekly and Monthly use a separate six-month comparison window.
Short Custom ranges keep that same longer card.
Read its heading before comparing point values.
Step 2
Read a calendar-year comparison
- Read a calendar-year comparison
- Check the longer chart's window
- Unknown history is not recorded zero
Annually uses twelve monthly buckets for the chosen year.
It does not switch to a fiscal year.
Highest and Lowest refer to this chart window.
Step 3
Read a longer Custom span
- Read a longer Custom span
- Check the longer chart's window
- Unknown history is not recorded zero
A Custom span longer than six months follows its selected months.
This nine-month example runs January through September.
It is separate from short-range detail.
Step 4
Read yearly buckets
- Read yearly buckets
- Check the longer chart's window
- Unknown history is not recorded zero
Custom spans over eighteen months use yearly buckets for readability.
The selected multi-year window stays explicit in the heading.
Do not treat missing balance history as recorded zero.
Step 5
Recognize unavailable history
- Recognize unavailable history
- Check the longer chart's window
- Unknown history is not recorded zero
Card months with no known history remain No data.
A real recorded zero is different from a gap.
The line must not join unknown balance months as if they were paid off.