[time-nuts] Better TEC data (MJD 55779)

[Scott Newell]

Cumulative error, starting at MJD 55779 (difference scaled by 100 and 
smoothed):
http://n5tnl.com/tec/55779/55779.png

Frequency error, 3600 s intervals:
http://n5tnl.com/tec/55779/55779_3600.png

Frequency error, 600 s intervals:
http://n5tnl.com/tec/55779/55779_600.png

Frequency error, 60 s intervals:
http://n5tnl.com/tec/55779/55779_60.png

Example webcam shot:
http://n5tnl.com/tec/55779/tec_2209050806.jpg

localtime is CDT, UTC-5.