What does the "Bid Indicator" mean, and how is it determined in my campaign performance?

"Bid Indicator" reflects the difference between how much budget is spent and how much campaign time has passed.

• If budget spend aligns with elapsed time (±10%), it's an Optimal Bid.
• Spending too fast (>10% ahead of time) is a High Bid.
• Spending too slowly (>10% behind schedule) is a Low Bid.