Examples of heliospheric observations from IPS typically used in space weather science and operations. (a) IPS g-level (related to density fluctuation in the interplanetary medium) and speed. (b) Tomographic 3-D reconstruction of properties in top panel. (c) SOHO data of velocity of solar wind (left) and ACE data of density (right) with respect to time, plotted with forecast of the same property using observations of IPS. Observations such as these are now used routinely in space weather forecasting. Realtime data are available at http://ips.ucsd.edu/.