# UCOSE Codes

*Example:*

*Definition of symbols:*

*First Line*-

**UCOSE**comes from**COS**mic rays,**E**

**I I I I I**= station indicator

**DD**= UT day of first period for which flux values are given**T**= type of apparatus- 0 = neutron monitor (IGY-Simpson type)
- 1 = high counting rate neutron monitor (IQSY-type)
- 2 = meson monitor (IGY-type)
- 3 = meson monitor (IQSY type)
- 4 = telescope, no shielding
- 5 = ionization chamber

**HH**= UT hour of message (normally in the UT day following the date of**DD**)

**a**= type of variation during the day- 0 = normal daily variation
- 1 = beginning of a pre-decrease
- 2 = pre-decrease
- 3 = commencement of a Forbush decrease
- 4 = Forbush decrease
- 5 = recurrent activity
- 6 = increase
- 7 = after-effect of increase
- 8 = daily variation of large amplitude
- 9 = daily variation of anomalous phase

**b**= sign of daily variation (below or above arbitrary level)- 7 = negative
- 8 = zero
- 9 = positive

**c c c**= average deviation expressed in steps of thousandths of an arbitrary mean level

**HH**= UT hour indicator; deviation of flux from the normal value following with**ddd**refers to the interval**HH**-1 to**HH**+1 hours; if the deviation is positive, 30 is added to the hour to obtain**HH****ddd**= deviation of cosmic ray flux from level expressed by steps of thousandths of an arbitrary mean count

Note: The arbitrary level is selected so that the deviations can be specified by three digits.

The arbitrary level is always chosen higher than the actual level (see example below).

Note: **/** is to be used for data not available.