function CTD = readCTD(filename)
% Read CTD data from test tank and trim to match up with Sensor data
CTD = readtable(filename);

% Convert to MATLAB datetime
CTD.utc_time = datetime(CTD.utc_time, 'InputFormat', 'yyyy-MM-dd''T''HH:mm:ss''Z''', 'TimeZone', 'UTC');
CTD.utc_time.Second = 0; % Matching the grids **Remember to note this step
CTD.utc_time.TimeZone = "UTC";
