I have a data frame include whole country summary stats "countrylevel"
I have another data frame includes summary stats for each city in the country "citylevel" . (each city has 3 rows 5 columns)
#countrylevel
Id v1 v2 v3
AC 2.2 3.6 9.2
AR 4.2 5.2 7.1
AW 4.2 5.2 7.1
#citylevel
city area v1 v2 v3
A er 2.2 3.6 9.2
A ea 4.2 5.2 7.1
A ew 4.2 5.2 7.1
B er 6.2 7.1 9.2
B ea 2.5 8.1 5.4
B ew 7.5 3.8 7.3
C er 1.5 2.2 3.1
C ea 1.8 2.3 4.7
C ew 2.5 9.8 3.8
My question: How can I add "the countrylevel df" after each city in the citylevel df (after every 3 rows)?