Number of flares for each constellation, simply scaling them to one-third of the flares caused by the original Iridium satellites (which had three large antennas) and to the number of satellites. This is the number of observable flares per night, or the number of flares per week brighter than −5 mag for a mid-latitude site. The colour encodes the sun elevation below the horizon, from 0° (red), −18° (pale blue), and into the night (darker blue to greys).