# Code table 4.2 - Parameter number by product discipline and parameter category
0 0 Seconds prior to initial reference time (defined in Section 1) (s)
1 1 Meridional overturning stream function (m3/s)
2 2 Reserved 
3 3 Days since last observation (d)
# 4-191 Reserved 
# 192-254 Reserved for local use 
255 255 Missing