Complex Data Tables
A complex data table has at least one heading that spans multiple rows or columns. The table shown in FigureÂ 6-2 (which was taken from http://ks.water.usgs.gov/Kansas/pubs/fact-sheets/fs.024-00.pdf) is a complex table because it has both row and column headings and several of the row headings span multiple rows. For example, âFlash Floodâ applies to four rowsâmap numbers 21â24.
FigureÂ 6-2.Â Example of a complex table
A well-written summary can provide a verbal map that helps someone using a screen reader navigate the data more efficiently:
<table summary=" The table is divided into six columns: Map number, Date, ...