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 -0.058 -0.045 -0.070 2 -0.061 -0.049 -0.074 3 -0.039 -0.026 -0.051 4 -0.016 -0.003 -0.029 5 0.001 0.014 -0.011 6 0.026 0.039 0.013 7 0.031 0.044 0.018 8 0.039 0.052 0.026 9 0.051 0.063 0.038 10 0.049 0.062 0.037 11 0.013 0.025 0.001 12 -0.037 -0.024 -0.049