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 -0.011 -0.001 -0.021 2 -0.031 -0.021 -0.041 3 -0.064 -0.054 -0.075 4 -0.078 -0.068 -0.089 5 -0.052 -0.041 -0.062 6 -0.011 -0.001 -0.021 7 0.035 0.045 0.025 8 0.057 0.067 0.046 9 0.075 0.085 0.064 10 0.051 0.061 0.041 11 0.021 0.031 0.011 12 0.009 0.020 -0.001