If measuring one thing at each place, use: latitude, longitude, count
If measuring 2-4 things at each place, use: lat, long, count 1, count 2, 3, 4
If the first row contains titles, they will be used for the layer name. Maximum of 50 lines.
You'll be given a shortlink to use. Privacy note: All maps you create are publically accessible.
You can save your maps so you can view them again later - you'll be given a shortcode to remember, and if you are logged in to Gemma, your map will be saved to the My Maps section. Also, you can create a PDF of your map easily, for printing out.