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 -0.114 -0.098 -0.130 2 -0.118 -0.102 -0.134 3 -0.019 -0.003 -0.035 4 0.047 0.063 0.031 5 0.057 0.073 0.041 6 0.062 0.078 0.046 7 0.043 0.059 0.027 8 0.055 0.071 0.039 9 0.069 0.085 0.053 10 0.038 0.054 0.023 11 -0.032 -0.016 -0.047 12 -0.089 -0.073 -0.105