Since both precipitation amount (mm) and probability (%) are plotted as lines:
It makes it difficult to (quickly) tell which line is which
The probability is an instantaneous measurement, while the amount is accumulated over the entire hour.
When the lines cross it seems there might be a special meaning (but there isn't)
If the plot types for precipitation amount (mm) and probability (%) are different:
The chart becomes easier to read and less confusing.
Precipitation amount is not a continuous measurement, so a bar chart naturally represents how much rain will fall within that hour, where the width of the bar denotes the hour on the x-axis.
It is possible to combine other the other metrics into the chart, too:
Since both precipitation amount (mm) and probability (%) are plotted as lines:
If the plot types for precipitation amount (mm) and probability (%) are different:
It is possible to combine other the other metrics into the chart, too:![image](https://github.com/vsergeev/briefsky/assets/381217/2187387e-2d6a-4b54-8476-a86770b54f34)
References