How Does Foreman Define Uptime?

Foreman offers on-demand access to historical hashing and power consumption data through the Reports tab.

Since Pickaxe is always recording metrics from your miners, Foreman is able to display historical averages over specified periods of time for Hash Rate.

How Uptime is Defined on the Power Report

Average Uptime: refers to the percentage of time that Pickaxe can reach a miner on the network, even if it's in sleep mode and not hashing.

Hashing Uptime: refers to the percentage of time that a miner is reachable on the network, and is also reporting a hash rate greater than 0.