filename = 'Loads .xlsx';
opts = detectImportOptions(filename,'range','A:D');
opts = setvartype(opts, 'Date', 'datetime' );
opts = setvartype(opts, 'Time', 'duration');
opts = setvaropts(opts, 'Time', 'InputFormat', 'hh:mm');
opts.SelectedVariableNames = {'Date', 'Time', 'Load_kW_'};
for S = 1:3
opts.Sheet = S;
T{S} = readtable(filename, opts);
end
T will then be a cell array of three table() objects. Each table will have fields Date (datetime), Time (duration), Load_kW_ (floating point)
