wilcox.test(abs_error_gics, abs_error_sbp, alternative = "two.sided", mu=0, conf.int=T, conf.level = 0.99, paired = TRUE)

data:  abs_error_gics and abs_error_sbp
V = 48485000, p-value = 0.00000002249
alternative hypothesis: true location shift is not equal to 0
99 percent confidence interval:
 0.00768364 0.02082407
sample estimates:
(pseudo)median
    0.01426058