>>> from pensions import no_arriba

>>> l = [['1111A',68,640,589,573], ['2222D',69,710,580,600,698,705,572],
... ['3333J',72,530,534],['4444N',75,770,655,630,650,610,491,632]]

>>> no_arriba(l,650)
'2222D'

>>> no_arriba(l,850)
''

>>> no_arriba(l,712)
'4444N'

>>> no_arriba(l,570)
'1111A'