Manual of Standards Part 173—Standards Applicable to Instrument Flight Procedure Design
(c) for visibility values greater than 1(c) for visibility values greater than 1,000 m, the calculated value must be rounded-up to the nearest multiple of 200 m.
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(c) for visibility values greater than 1,000 m, the calculated value must be rounded-up to the nearest multiple of 200 m.
Exception. For runway approaches it must not be less than the minimum values permitted at paragraphs 8.1.6.1B, 8.1.6.1C, 8.1.6.2A, 8.1.14 and 8.1.15.
Note: The rounding in paragraph 8.1.7.1 may give inappropriate values when determining visibility for foreign procedures. In such cases, the value determined under paragraph 8.1.6 may be rounded to any value within the following range:
Note: 1. for RVR values up to 800 m = 25 m;
Note: 2. for RVR values greater than 800 m = 50 m;
Note: 3. for visibility values greater than 1,000 = 100 m