Collecting statistics for a specific time period

The syntax for admin stats is:

admin { stats | statistics }[, sysmon |, "all" 
	|, module_name[, inbound |, outbound ][, display_name ] ]
		[, dataserver[, database ]
	|, instance_id  ] 
	[, display |, save[, num_obs ] ] 
	[, sample_period ]

admin stats lets you specify:

By default, Replication Server does not report counters that show 0 (zero) observations for the sample period. You can change that behavior by setting the stats_show_zero_counter configuration on using configure replication server. See the Replication Server Reference Manual for complete syntax and usage information.