The Intergovernmental Oceanographic Commission has just published a new manual on the quality control of sea level observations. The manual explores the need for quality control, appropriate methods for different forms of sea level data, metadata requirements, commonly used software packages, and investigates recent developments in automated quality control.
The manual (IOC Manual and Guide 83) is available from the IOC website. Simply click on the link : Quality Control of in situ Sea Level Observations : A Review and Progress towards Automated Quality Control.