xtset id year

Panel variable: id (unbalanced)
Time variable: year, 2011 to 2021, but with gaps
         Delta: 1 unit

.
end of do-file

. do "C:\Users\29575\AppData\Local\Temp\STD5fc8_000000.tmp"

.    sort id year

.
end of do-file

. do "C:\Users\29575\AppData\Local\Temp\STD5fc8_000000.tmp"

.    bysort code1 hs6 year: gen lweight_rt = l.weight_rt
not sorted
r(5);