Securing the Border from Invasives: Robust Inspections under Severe Uncertainty

Table 1

Frequency distribution of boxes per shipment subject to AQI inspections, United States maritime ports, 2004–2006. Source: United States Department of Agriculture [38].

Boxes per shipment	Shipments	Percent
0–500	23	2.6%
500–1000	328	36.6%
1000–1500	385	42.9%
1500–2000	99	11.0%
2000–2500	34	3.8%
2500–3000	28	3.1%
Total sample shipments	897	100.0%