All 18 gauges update automatically as their sources publish (daily, weekly, monthly or quarterly); each card shows its data date.
The seven triggers are pre-registered on this page and scored like any other track: each firing is logged with its date, and SPY's path after it is published, hit or miss. They never say how much to sell.
A base rate answers "when this gauge was here before, what did SPY do next?" — computed from the gauge's own history, published with n and the window, never promised.