An ODP will typically list a specific ceiling and specific visibility( Example :" 400-2 or std. with min. climb gradient 300 ft./nm".) if standard vis. conditions have a higher than standard climb gradient (greater than 200 ft. nm) and a aircraft that cannot meet the higher than standard climb gradient should use the higher mins. (400-2).
Reference KMRN ODP for runway 21. Runway 21 only lists takeoff mins. for standard conditions. It does not give a "or" option as in the example above. Does this imply that even if the vis. is greater than standard that you must always climb at the published 225. ft. nm?
Thank you for the feedback.