I-G/IGn = "Ilona's list", GPS sources & candidates etc.
G-g/C-g = GPS galaxies/CSS galaxies
EP = Intergral ToO list by Elena Pian
gamma = selection of gamma-ray sources and candidates
BLO = BL Lacertae Objects
M1/Mf = monitoring sources with flux > 1Jy/ monitoring sources with flux < 1Jy
FGST = Sources detected with Fermi Gamma-ray Space Telescope. FG0 = sources in only the first 3-months catalog (but not in the 1-year catalog anymore), FG1 = sources in the 1-year catalog.
WM = WMAP sources and candidates
Ot = Other categories, e.g. TeV = source detected with TeV instruments (/H = HESS, /M = MAGIC, /V = VERITAS, /W = Whipple), TeV? = TeV candidate, mostly from the Tuorla monitoring list, Marscher = source in Alan Marscher's monitoring program
Observe...
1= NOW; 2= weekly; 3= monthly;
4= Every 4-6 months;
9 = currently not important.
* = Has not been observed in a time its priority requires.
* = Due now in spite of the priority class!