Temperature Monitor

Temperature: what the probe in that room reads right now, not the temperature of the sensor board itself.
RH: relative humidity, how much moisture is in the air. Under 30% is dry, over 60% feels muggy.
Colors: each sensor has its own color, and it never changes. The color on a reading up here is the same color as that sensor's line on the charts below, so this panel doubles as the chart key. Color does not mean hot or cold.
HOT / COLD: shown only when a room goes above 85°F or below 50°F. In between, nothing is shown, because the number already tells you.
No reading: that sensor did not report in the newest round. Its spot stays put so nothing shifts around, and it fills back in on its own.
Time Range: how far back the charts look. The longer ranges are averaged into buckets, so brief spikes get smoothed out.
A gap in a line: that sensor stopped reporting for a while. The line picks back up when it returns.
Every 5 minutes: how often the sensors report, so a reading a few minutes old is normal and healthy.
Green dot / Online: the monitor itself is healthy; "updated Xs ago" is the age of the newest reading. This is about the monitor, not the temperature.