set terminal png size 1024,800set samples 1000set xlabel "Time [h]"set ylabel "T [deg C]"set key under#set grid on#set yrange [-1:1]#set logscale yset output "Heating_alter.png"plot "test_hum.log" using 0:1 with lines title "Temperature", "" using 0:2 with lines title "Humidity", "" using 0:4 with lines title "Heating"set output "Heating_alter2.png"plot "test_hum2.log" using 0:1 with lines title "Temperature", "" using 0:2 with lines title "Humidity", "" using 0:4 with lines title "Heating"set output "outdoor_test.png"plot "TempHum.log" using 1:3 with lines title "Temperature", "" using 1:4 with lines title "Humidity"