Number of measurements available in each month during the year of 1997-2002

Location Month 1997 1998 1999 2000 2001 2002
SULA1 1 0 0 0 0 11 9
SULA1 2 0 0 0 0 9 10
SULA1 3 0 0 0 0 9 10
SULA1 4 0 0 0 0 9 10
SULA1 5 0 0 0 0 11 10
SULA1 6 0 0 0 0 10 10
SULA1 7 0 0 0 1 7 9
SULA1 8 0 0 0 1 8 2
SULA1 9 0 0 0 8 7 10
SULA1 10 0 0 0 10 11 10
SULA1 11 0 0 0 6 10 10
SULA1 12 0 0 0 10 9 11