readChannelID = 123456; 
readAPIKey = 'ABCDE'; 
WeightFieldID = 1; 
TemperatureFieldID = 3; 

AnzTage = 60;
Messintervall = 15; %in Minuten

AnzahlMesswerte = AnzTage * 24 * 60 / Messintervall;

[data, timeStamps] = thingSpeakRead(readChannelID, 'Fields',[WeightFieldID TemperatureFieldID], ...
                                                           'NumPoints', AnzahlMesswerte, ...
                                                           'ReadKey', readAPIKey);

% Extract the temperature data from the first column
WeightData = data(:, 1);%/1000;
% Extract the windspeed data from the second column
TemperatureData = data(:, 2);

% Visualize Data
yyaxis left
plot(timeStamps, WeightData,'LineWidth', 2);
ylabel('Gewicht [kg]');

yyaxis right
plot(timeStamps, TemperatureData,'LineWidth', 2);
ylabel('Außentemperatur [°C]');

title('Außentemperatur und Gewicht (Langzeit)');
grid on