Battery discharge current
If you look at the graphs for performance you will see that best cell capacity for various loads implies a minimum load resistance of about 3 kohm. Much lower than this and cell capacity drops from about ~900 mAh potentially down to ~600mAh at 1k loading. These approximately correspond to currents of 1mA (3k load) and 2.5mA (1.2 k load) and approximately tie in with the "standard" and "max" discharge currents: -