The last set of test files came from the future. Seriously, straight
from the receiver containing data from the future. Cue Twilight Zone
theme music. I'll have to investigate that. In the mean time, here are
some from today. 15 second epochs, about 50K each.

rt17c_20140706.rt17  = RT17 compact format (no L2 DOPPLER)
rt17ce_20140706.rt17 = RT17 compact format + enhanced data (L2 DOPPER)
rt17e_20140706.rt17  = RT17 expanded format (no L2 DOPPLER)
rt17ee_20140706.rt17 = RT17 expanded format + enhanced data (L2 DOPPLER)

All of the above also contain GPS ephemerides and ION / UTC data