SELECT STATION:


TIME RANGE (UTC): 

FILTER SPECIFIC INSTANT:


NOTE: Set "undefined" in "FILTER SPECIFIC INSTANT" if you want to plot all the ionograms available in the "TIME RANGE" choosed. Attention: maximum 12 hours of contiguous ionograms can be displayed at time. Instead, by setting a "TIME RANGE" and defining a specif time in "FILTER SPECIFIC INSTANT" the ionograms for a specific hour across multiple days (maximum 2 weeks at time) will be plotted.