subplot(311),plot(time,pompa), grid on, xlabel('time [sec]'), ylabel('pompa [ON/OFF]')
subplot(312),plot(time,debit), grid on, xlabel('time [sec]'), ylabel('Debit Air [liter/secoF]')
subplot(313),plot(time,level), grid on, xlabel('time [sec]'), ylabel('LEVEL [cm]')


subplot(414),plot(time,level), grid on, xlabel('time [sec]'), ylabel('LEVEL [cm]')

