:Issued: 2024 May 17 0603 UTC
:Product: documentation at http://www.sidc.be/products/cactus
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# HALO CME ALERTS from the SIDC (RWC-Belgium), generated by CACTUS   #
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  A halo or partial-halo CME was detected with the following characteristics:

            t0      | dt0| pa | da |  v  |  dv | minv| maxv|
2024-05-15T21:12:12.069 | 3.0 | 310 | 150 | 763 | 439 | 112 | 1838 


      t0: onset time, earliest indication of liftoff
     dt0: duration of liftoff (hours)
      pa: principal angle, counterclockwise from North (degrees)
      da: angular width of the CME (degrees),
       v: median velocity (km/s)
      dv: variation (1 sigma) of velocity over the width of the CME
   mindv: lowest velocity detected within the CME
   maxdv: highest velocity detected within the CME

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