..generic:
  git2rdata: 0.5.0
  optimize: no
  NA string: NA
  sorting: jaar
  hash: 0f6d8f41937e38b54d4409b85d4195baef627afb
  data_hash: 8238eed7b447f10e4b1dd2b7f307e660a111859d
jaar:
  class: integer
berk:
  class: integer
berk_mediaan:
  class: numeric
  digits: 6
berk_lcl90:
  class: numeric
  digits: 6
berk_lcl60:
  class: numeric
  digits: 6
berk_lcl30:
  class: numeric
  digits: 6
berk_ucl30:
  class: numeric
  digits: 6
berk_ucl60:
  class: numeric
  digits: 6
berk_ucl90:
  class: numeric
  digits: 6
grassen:
  class: integer
grassen_mediaan:
  class: numeric
  digits: 6
grassen_lcl90:
  class: numeric
  digits: 6
grassen_lcl60:
  class: numeric
  digits: 6
grassen_lcl30:
  class: numeric
  digits: 6
grassen_ucl30:
  class: numeric
  digits: 6
grassen_ucl60:
  class: numeric
  digits: 6
grassen_ucl90:
  class: numeric
  digits: 6