The externally powered, continuously pumped CTD consumes only 240 mW sampling continuously at 1/2 Hz. One Alkaline C cell could operate the CTD continuously for 37 hours (3 days at 50% duty cycle, profiling continuously at ½ Hz on every glider upcast); a 50% duty cycle for 30 days uses only 4.2% of a typical Slocum glider’s alkaline energy capacity (7.8 MJ). Data are output in engineering units or raw decimal counts.

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