R 文本对齐

我想复制这个演示：

这是我的代码，但我将列的文本对齐在左侧。你知道如何将它对齐到右边吗

cat("===========================================================\n \n") 
cat("\n Statistiques des variables vitesse_10km vitesse_21km \n") 
cat("----------------------------------------------------------- \n \n") 
cat("\t ", "\t ", "vitesse_10km", "\t ", "vitesse_21km", "\n")
cat("Moyenne   ", "\t ", mean10,  "\t ", "\t ", mean21, "\n")
cat("Ecart-type   ", "\t ", sd10, "\t ","\t ", sd21, "\n")
cat("Minimum  ", "\t ", min10, "\t ", "\t ", min21, "\n")
cat("Maximum  ", "\t ", max10, "\t ", max21, "\n")
cat("===========================================================\n \n")

您可以使用sprintf将数字（或字符串）格式化为固定大小，并填充前导空格。例如：

> cat(sprintf("++% 8.2f++", 20))
++   20.00++