Excerpt from The Use of Electricity in Conjunction With a 12. 5 Meter (Headrope) Gulf-of-Mexico Shrimp Trawl in Lake Michigan
Figure 6. Â Alewife length-frequency distribution with electrode arrays 1, 2, and 3 combined. Solid line, power on (n z 387; mean dashed line, power off (n 364; mean Z test for the difference between the two sample means at level of calculated Z tabular Z not significant.