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 -0.078 -0.066 -0.090 2 -0.142 -0.130 -0.154 3 -0.161 -0.149 -0.173 4 -0.136 -0.124 -0.148 5 -0.064 -0.052 -0.076 6 0.022 0.034 0.010 7 0.115 0.127 0.103 8 0.181 0.193 0.169 9 0.143 0.155 0.131 10 0.093 0.105 0.081 11 0.037 0.049 0.025 12 -0.010 0.002 -0.022