The option --alt-autoscale give me unfortunately not what I need. The first image is made without the option alt-autoscale. The second image is made with the option alt-autoscale. The only difference is the position of 0 in the Y-axis. Also the options alt-autoscale-min and alt-autoscale-max give me not what i need. I want to see on the Y-axis only the part between 940 and 1040. [image: 1738741077008-air_pressure_normal_scale.png] [image: 1738741091865-air_pressure_altautoscale.png]