The microcat data files contain the structure"mc". The example below
is for bs3_201820_16930_edt.mat                                                    
                                                                     
mc =                                                                 
                                                                      
       setup: [1x1 struct]         see below                                 
        dday: [70191x1 double]     2014 decimal days;                                   
        date: [70191x6 double]     dates in the form of [y m d hh mm ss]                                 
     datenum: [70191x1 double]     matlab's version of time                                 
    pressure: [70191x1 double]     measured pressure    [dbar]                             
       depth: [70191x1 double]     converted depth [m], using presure and sw_dpth for lat=71.33                                
        temp: [70191x1 double]     measured temperature  [deg C]                              
        cond: [70191x1 double]     measured conductivity [S/m]                                 
         sal: [70191x1 double]     derived salinity  [psu]                                
          SS: [70191x1 double]     derived sound speed [m/s]                                  
 
                                                             
>> mc.setup                                                          
                                                                     
ans =                                                                
                                                                     
           mooringID: 'BS3'
          instrument: 'SBE37SM-RS232 SerialNumber=03716930'
            latitude: -152.0524
           longitude: 71.3946
        bottom_depth: 149
    instrument_depth: NaN
          start_time: [2018 10 27 0 0 1.0000]
            end_time: [2020 10 27 3 30 1]
       in_water_time: [2018 11 1 22 30 1]
      out_water_time: [2020 10 24 17 30 1]
               n_iwt: 571                              % index for first at-depth measurement
               n_owt: 69959                            % index for last at-depth measurement
             comment: 'mc.dday is "decimal day": noon on Jan 1 = 0.5'
           processor: 'F. Bahr, WHOI, Jan 2020'