96. Which is the most important information to be obtained from a barometer?

The weather indications printed on the dial (such as "cold, wet, etc.") under the pointer
The difference between the reading of the two pointers, which shows wind direction
The last two figures of the reading of the pointer, such as .87, .76, or .92
The present reading of the pressure, combined with the changes in pressure observed in the recent past

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