Automated Data Plotter

This application dynamically generates many types of graphs derived from various IEM data sources. Feel free to use these generated graphics in whatever way you wish.

Reset App IEM Explorer (Simplified)

1 Select a Chart Type

Choose from available chart types:

2 Configure Chart Options

Select Station (STC000? are climate district, ST0000 state avg)

Select Year

Growing Degree Day Start

Growing Degree Day End

Growing Degree Day base (F)

Growing Degree Day ceiling (F)

Color Ramp:

Reverse Colormap?

Image Pixel Size @100 DPI

Image Resolution (DPI) (50 to 500)

Select Output Format:

Plot Description:

This plot presents the period over which growing degree days were accumulated between the two thresholds provided by the user. The colors represent the number of days for the period shown.

3 Generated Chart

Based on recent timings, plot generation averages 2 seconds. Please wait while your chart is being generated...

CSV Data Excel Download

If you notice plotting issues with the image above, please contact us and provide the URL address currently shown by your web browser.

IEM Daily Features using this plot

The IEM Daily Features found on this website often utilize plots found on this application. Here is a listing of features referencing this plot type.

09 May 2025: Accumulating 120 GDDs
06 Sep 2022: Corn needs more time
17 May 2021: Corn Emergence Days
11 Jun 2019: Corn Emergence GDDs
30 Oct 2017: GDD Maturity Struggle
14 Jul 2016: Tassel to Silking Period
12 Aug 2015: GDD Periods
11 Aug 2014: Slow Accumulation