これらの表現は何を意味するのか、教えてください
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HHZ水位 HA水位 NL水位 LA水位 LLZ水位
高水位での遮断、高水位警報、正常水位、低水位警報、極低水位での遮断
HHZ水準位：超高水位連動停止、lHA水準位：高水位警報、NL水準位：正常、LA水準位：低水位警報、LLZ水準位：超低水位連動停止
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