The Global Oscillations Network Group (GONG) Project is engaged in:

a. measuring where earthquakes happen around the Earth by the waves they generate

b. measuring the pulsations of the Sun from stations around the world

c. measuring the quality of the "seeing" (the "jiggling" of the Earth's atmosphere) at all the major observatories around the world

d. measuring the number of sunspots on the surface of the Sun at any given hour

e. measuring where earthquakes happen around the Earth by the waves they generate

f. measuring how problems on the World Wide Web are affecting the communication among astronomers