The average seasonal cycle of mean sea level. The values are in meters. Column values are the Month, Relative Sea Level, Upper 95% Confidence Interval, and Lower 95% Confidence Interval. Product of NOAA’s National Ocean Service / Center for Operational Oceanographic Products and Services (CO-OPS) Month Water Level Upper95% Lower95% 1 -0.037 -0.023 -0.052 2 -0.050 -0.036 -0.065 3 -0.055 -0.040 -0.069 4 -0.015 -0.001 -0.030 5 -0.008 0.007 -0.023 6 0.006 0.021 -0.009 7 -0.005 0.010 -0.020 8 -0.001 0.013 -0.016 9 0.009 0.024 -0.005 10 0.053 0.068 0.038 11 0.079 0.093 0.064 12 0.025 0.040 0.010