Use thick lines with clear scales for axes and data lines, and use thin lines or dotted lines for grid lines (if used). The scale line is on the inner (upper) side of the coordinate axis.

Coordinate name and unit cannot be less. The text of coordinate names and unit names on the ordinate should be inverted to the left for easy reading. Units should use standard units.

When there is only one data chart and line, legend is not needed.

The name of the picture should be self-evident.

If it needs to be printed, it is generally black and white (academic journals are generally published in black and white), and it is also necessary to consider that the printed lines can be clearly distinguished from each other.

As shown in the figure, it is a patchwork picture. The circular data mark inside is a bit big.