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

Location Month 1997 1998 1999 2000 2001 2002
SIAN1 1 0 0 0 0 9 10
SIAN1 2 0 0 0 0 9 10
SIAN1 3 0 0 0 8 10 9
SIAN1 4 0 0 0 9 8 10
SIAN1 5 0 0 0 9 9 8
SIAN1 6 0 0 0 7 9 10
SIAN1 7 0 0 0 9 10 11
SIAN1 8 0 0 0 6 6 10
SIAN1 9 0 0 0 8 10 5
SIAN1 10 0 0 0 10 7 0
SIAN1 11 0 0 0 9 10 7
SIAN1 12 0 0 0 6 8 9