Listado del total de dias con datos de precipitaciones
 BUENOS AIRES        AZUL AERO                  
 nro smn:  196 nro OMM:  87642
 AñoxMes  1   2   3   4   5   6   7   8   9  10  11  12
 ----------------------------------------------------------
1988      0   0   0   0   0   0   0   0   0   0   0   0
1989      0   0   0   0   0   0   0   0   0   0   0   0
1990      0   0   0   0   0   0   0   0   0   0   0   0
1991      0   0   0   0   0   0   0   0   0   0   0   0
1992     31  29  31  30  31  30  31  31  30  31  30  31
1993     31  28  31  30  31  30  31  31  30  31  30  31
1994     31  28  31  30  29  26  30  26  27  30  27  13
1995      0   0   0   0   0   0   0   0   0   0   0   0
1996      0   0   0   0   0   0   0   0   0   0   0   1
1997      0   0   1   0   0   0   0   0   0   0   0   0
1998      0   0   0   0   0   0   0   0   0   0   0   0
1999      0   0   0   0   0   0   0   0   0   0   0   0
2000      0   0   0   0   0   0   0   0   0   0   0   0
2001      0   0   0   0   0   0   0   0   0   0   0   0
2002      0   0   0   0   0   0   0   0   0   0   0   0