This script indicator prints lines for the highest, lowest and middle price in a selected time period (in days).
With that you can easily see wheter the price is currently high, low or balanced compared to the prices in the selected time period.
I also added a gray dotted vertical line to the chart which represents the beginning of your selected time period
You can choose the time period on your own and you can also customize the color and style of the lines.
Your lines may get printed in a separate window. To fix this, click on the indicator and select
Move to -> existing pane above
Your lines also may stay stuck on the same place on the chart and are not fixed to a high/low. To fix this, right-click on the left price scale and select
Merge all scales into one -> on the right