Roffa - many thanks.
The information states:
Super Upper Medium 8
Super Lower Medium 8
Super Small 8
I assume an A321 would fall into one of these categories.
However, looking at the first of the two SBS records (this was the log from July 30th):
SIA318 SQ318 9VSKE A388 WSSS 1746 301 27R
AZA5P4 AZ208 IBIXL A321 LIRF 1748 208 27R
An A321 is following an A380 with a 2 minute gap, surely that spacing would be less than 8nm? Should I take it that the SBS data is just unreliable, or might there be extenuating circumstances?