Mistaking a date range for one day
A row may cover a week rather than a single date. Read both the range and weekday column before assigning an entry to a calendar day. A number copied without its date is difficult to check later.
Losing zeros or reading hidden columns
Copy a two-digit entry exactly as shown, including its leading zero. On a narrow screen, scroll the table sideways to inspect its headings. The first visible cell is not necessarily the first column.
Mixing unrelated sessions
Our Time Bazar archive is a Day listing. Keep it separate from differently named markets elsewhere. For other markets with Day and Night pages, use their exact session names when recording entries.
Treating a pattern as a correction
Do not replace an unexpected entry merely because it breaks a sequence. Check the original date and source first. A repeated value or a long gap is not sufficient evidence of either an error or a reliable prediction.
