ZONPY

Tidal Zoning Tool — developed by Spectrah Oceanografia e Meio Ambiente

Step 1 — Tide Files

Reference Station — File (.txt) Station Name UTC Offset (hours)

Subordinate Station — File (.txt) Station Name UTC Offset (hours)

Output UTC Offset (hours)

Number of Zones (N)

Initial Zone Number (NZ)

Mean Level — Reference (Zo ref, m)

Mean Level — Subordinate (Zo sub, m)

Outlier Removal (std multiplier)

Set to 0 to disable outlier removal.

Smoothing Window (samples)

Number of samples for moving average used in outlier detection.

Filter Cutoff (minutes)

Cutoff period for the Butterworth low-pass filter. Recommended: 33 min.

Processing tide data, please wait...

Phase Lag (min)

Max Step Before Zoning (m)

Max Step After (+) (m)

Max Step After (−) (m)

Zone	Zo (m)

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