Occupation: Bridge and Lock Tenders
Task: Observe approaching vessels to determine size and speed, and listen for whistle signals indicating desire to pass.

Scale: Frequency of Task (Categories 1-7)
Category: 1
Value: 0 (N=26)
Source: Occupational Expert, 07/2005

Scale: Frequency of Task (Categories 1-7)
Category: 2
Value: 0 (N=26)
Source: Occupational Expert, 07/2005

Scale: Frequency of Task (Categories 1-7)
Category: 3
Value: 0 (N=26)
Source: Occupational Expert, 07/2005

Scale: Frequency of Task (Categories 1-7)
Category: 4
Value: 3.85 (N=26)
Source: Occupational Expert, 07/2005

Scale: Frequency of Task (Categories 1-7)
Category: 5
Value: 30.77 (N=26)
Source: Occupational Expert, 07/2005

Scale: Frequency of Task (Categories 1-7)
Category: 6
Value: 11.54 (N=26)
Source: Occupational Expert, 07/2005

Scale: Frequency of Task (Categories 1-7)
Category: 7
Value: 53.85 (N=26)
Source: Occupational Expert, 07/2005

Scale: Importance
Value: 4.44 (N=25)
Source: Occupational Expert, 07/2005

Scale: Relevance of Task
Value: 93.1 (N=29)
Source: Occupational Expert, 07/2005