I don’t have enough context to answer yet. It looks like you’re asking about “prop0” and “pass by” but there isn’t enough detail to determine what you’re referring to (the specific prop, dataset, or context). If you can share a bit more, I can help precisely. Assuming you’re asking about a generic prop passing concept in React:

• Props are passed from a parent to a child component. They are read-only inside the child, and values can be primitives (strings, numbers) or objects/arrays.
• Primitive props are passed by value, while objects/arrays are passed by reference in JavaScript, which means the child can read the reference but should not mutate the object itself.

If you meant a political Prop 50 or another “prop” with a numeric passing threshold:

• Please specify the jurisdiction and topic, e.g., which Prop is being referred to, the year, and what “pass by” metric you need (vote margin, percentage, absolute votes, etc.).

Please provide:

• The exact subject or document you’re referring to (e.g., “Prop0 in project X” or “Prop 50 in California”).
• The metric you want (e.g., pass/fail status, vote count, percentage, margin).
• Any relevant date range or source you're using.

Once clarified, I’ll give a concise, direct answer with the precise figures.