Table 4. Values ${\mathrm{EARL}}_X$, ${\mathrm{EARL}}_T$ and ${\mathrm{EARL}}_{XT}$ of the 3 parametric Shewhart control charts proposed in [24] for scenarios #1 and #2.

	Scenario #1			Scenario #2
	$Z_1$	$Z_2$	$Z_3$	$Z_1$	$Z_2$	$Z_3$
$\mathrm{UCL}$	0.5550	1.9692	2.9115	0.5470	1.6742	2.6171
${\mathrm{EARL}}_X$	52.4749	93.1968	134.3478	85.9319	121.0851	110.8255
${\mathrm{EARL}}_T$	55.3093	44.5776	41.6612	69.5180	57.4231	57.5436
${\mathrm{EARL}}_{XT}$	10.9375	14.8817	18.9865	18.8108	20.8753	20.5259