Plot a graph with individual years from specific package?

So I have package wq (https://cran.r-project.org/web/packages/wq/vignettes/wq-package.html) and it has a section to graph decomposed time series:

chl27 <- sfbayChla[, "s27"] d1 <- decompTs(chl27) plot(d1, nc = 1, main = "Station 27 Chl-a decomposition")

Is it possible to get the years as increment of one rather that in 5 years batch?

My data has less years, so seeing the exact year would help.

The graphs in the vignette look like wq creates ggplot2-graphics, as is confirmed by looking at its entry in CRAN. That means the information on this page should help you adjust the tick marks as you see fit.