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 -0.118 -0.103 -0.134 2 -0.100 -0.085 -0.116 3 -0.056 -0.040 -0.071 4 0.013 0.028 -0.003 5 0.057 0.073 0.041 6 0.031 0.046 0.015 7 -0.044 -0.029 -0.060 8 -0.011 0.005 -0.027 9 0.141 0.156 0.125 10 0.130 0.146 0.114 11 0.029 0.044 0.013 12 -0.070 -0.054 -0.086