Ages of Striped Bass (Morone saxatilis) assessed from heat-pressed scales and cracked-and-burnt otoliths.
Format
A data frame of 343 observations on the following 2 variables:
- ageO
Age assigned from examinaton of otoliths
- ageS
Age assigned from examination of scales
Source
From Figure 6 in Chapter 10 (Striped Bass) of the VMRC Final Report on Finfish Ageing, 2000 by the Center for Quantitative Fisheries Ecology at Old Dominion University. CSV file
Examples
data(StripedBass1)
str(StripedBass1)
#> 'data.frame': 345 obs. of 2 variables:
#> $ ageO: int 3 4 4 4 4 4 4 4 4 4 ...
#> $ ageS: int 3 3 4 4 4 4 4 4 4 4 ...
head(StripedBass1)
#> ageO ageS
#> 1 3 3
#> 2 4 3
#> 3 4 4
#> 4 4 4
#> 5 4 4
#> 6 4 4
plot(ageS~ageO,data=StripedBass1)
xtabs(~ageO+ageS,data=StripedBass1)
#> ageS
#> ageO 3 4 5 6 7 8 9 10 11 12 13 14 15 16
#> 3 1 0 0 0 0 0 0 0 0 0 0 0 0 0
#> 4 1 22 12 0 0 0 0 0 0 0 0 0 0 0
#> 5 2 9 14 5 0 0 0 0 0 0 0 0 0 0
#> 6 0 0 8 9 0 1 0 0 0 0 0 0 0 0
#> 7 0 2 12 20 42 3 1 0 0 0 0 0 0 0
#> 8 0 0 2 0 10 17 3 0 0 0 0 0 0 0
#> 9 0 0 0 0 2 6 11 4 0 0 0 0 0 0
#> 10 0 0 0 0 1 2 9 7 0 0 0 0 0 0
#> 11 0 0 0 0 0 1 6 21 15 3 1 0 0 0
#> 12 0 0 0 0 0 2 1 3 4 6 0 0 0 0
#> 13 0 0 0 0 0 0 2 2 2 1 3 1 0 0
#> 14 0 0 0 0 0 1 1 0 1 2 2 0 0 0
#> 15 0 0 0 0 0 0 0 0 3 1 2 1 0 0
#> 16 0 0 0 0 0 0 0 0 0 1 3 2 0 1
#> 17 0 0 0 0 0 0 0 0 0 0 3 1 1 1
#> 18 0 0 0 0 0 0 0 1 0 0 1 1 0 3