Figure 4 | Scientific Reports

Figure 4

From: Prevalence and distribution of Varroa destructor and Nosema spp. in symptomatic honey bee colonies across the USA from 2015 to 2022

Figure 4

Nationwide averages of Varroa Infestation Level (VIL) displayed by month and year for data of the current study (a) and the USDA-APHIS National Honey Bee Survey NHBS (b). (n) is the number of samples in each graph and statistical analysis. Error bars in the line graphs are the Standard Error (SE). The Kruskal–Wallis test was conducted at three levels of significance: p < 0.05*, p < 0.01**, p < 0.001***. The box plot's median is displayed in white font, and box plots with different alphabetic letters are statistically significant.

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