# NOT RUN {
as.c14_date_list(data.frame(c14age = c(2000, 2500), c14std = c(30, 35)))
is.c14_date_list(5) # FALSE
is.c14_date_list(example_c14_date_list) # TRUE
print(example_c14_date_list)
plot(example_c14_date_list)
# }
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