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 -0.027 -0.047 2 -0.040 -0.029 -0.050 3 -0.026 -0.016 -0.036 4 0.004 0.015 -0.006 5 0.017 0.027 0.006 6 0.032 0.042 0.022 7 0.021 0.032 0.011 8 0.016 0.026 0.006 9 0.010 0.020 -0.000 10 0.018 0.028 0.007 11 0.008 0.018 -0.003 12 -0.023 -0.012 -0.033