= num messages
  1.01k	70.07%	weather/experimental
431.000	29.93%	weather/surface-based-observations
		431.000	29.93%	/synop
  1.44k	100.0%	(total)
= size
101.33M	99.69%	weather/experimental
316.34k	 0.31%	weather/surface-based-observations
		316.34k	 0.31%	/synop
101.65M	100.0%	(total)
= n topics for centreid
ca-eccc-msc-global-discovery-catalogue	1
io-wis2dev-11-test	1
io-wis2dev-12-test	1
io-wis2dev-13-test	1
io-wis2dev-14-test	1
io-wis2dev-15-test	1
my-metmalaysia	2
mz-inam	1
= n topics for category
weather/experimental	5
weather/surface-based-observations/synop	2