Count Fixed-Interval Observation Opportunities
A window includes an observation at its start when you use a start-inclusive schedule. Count sampling opportunities with that convention explicit, rather than losing the first observation in duration division.
1 · observation window | start minute | end minute
FIRST-LOAD
Input is processed locally and a draft is saved automatically in this browser profile when storage is available. Reset to sample clears that draft; Pro history has its own clear button. A state link encodes your inputs in its URL: share only non-sensitive rows. Browser history, clipboard and anyone receiving the link may retain it. Optional AI use below leaves this device; it is not required.
Data note: Everything runs in this browser tab on the transect tickstrip: your observation window | start minute | end minute stays on this device, nothing is uploaded, and the reading is rebuilt only when you press run.
Perspective: Before: Duration divided by interval counts gaps, not all sample instants. After: the transect tickstrip shows the working beside each named row so the reader can change the assumption and inspect the consequence.
2 · Read the transect tickstrip
Schedule arithmetic only, not scientific study design. Check supervision, site permission and fieldwork safety separately.
Paid layer: transect tickstrip print and history
one-time step · the free reading above stays complete
Free tier
- one complete transect tickstrip run in the app
- three samples plus unlimited article-demo runs
- unwatermarked result text and an explicit, user-triggered state link
What $4 one-time adds
- print the transect tickstrip with its row workings
- CSV of observation opportunities and row explanations
- last five reading summaries saved in this browser profile
$4 once for repeated filing of the transect tickstrip, not for a better answer. Illustrative time basis: avoiding one five-minute manual reformat per saved reading; no market-price or guaranteed-savings claim.
Local history (this device)
- No saved runs yet — your first run files here.
Checkout is unavailable until a payment link is configured. The optional unlock is browser-local, profile-scoped and best-effort, not server-verified access. Clearing browser data can remove it; there is no account or cross-device recovery.
Boundary and sources
Schedule arithmetic only, not scientific study design. Check supervision, site permission and fieldwork safety separately.
- Method: Floor the duration divided by the interval, then add one. A zero-to-thirty-minute window at seven-minute intervals gives observations at zero, seven, fourteen, twenty-one and twenty-eight.
- All sample records are invented examples. The app does not fetch measurements, policies, files or personal records.
- Google’s official pricing page, fetched 2026-09-27, lists free-tier access including AI Studio. Optional formatting only; limits and availability can change. Free-tier content may be used to improve products. Never paste private records there.
Mechanism: competence-autonomy-loop
Optional AI formatting, not calculation
For this transect tickstrip, use the free AI Studio interface only if available to you, with no paid API key. Manual entry completes the same workflow for free. Supply only fictional or non-sensitive notes. Review its output against the source; never paste unresolved questions into the numeric rows.
Format my non-sensitive notes for a transect tickstrip. Return plain rows only: observation window | start minute | end minute. Preserve supplied quantities exactly. Do not guess missing values; list questions separately. Do not calculate or add advice. I will check every row before pasting into the local tool.
Accepted schema: observation window | start minute | end minute. No AI response is executed as code.