I've tested the network in Soho, where I got speeds of around 35Mbps, and at the O2 in East London, where, surprise surprise, I got something much faster - up to 90Mbps.
The researchers used data from the global network of solar monitoring telescopes (Gong) as well as the Soho satellite positioned in a stable orbit 1.6 million km (a million miles) closer to the Sun than the Earth.