In the data, discharge pressure is:

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Discharge pressure is the pressure on the discharge side of the compressor—the head pressure the system must overcome after the refrigerant leaves the compressor. In the data, the gauge on the discharge line shows 345 psi, which is higher than the other pressures listed, so it matches the discharge side reading. The other numbers, being lower, would correspond to suction or intermediate pressures rather than the discharge pressure.