Water level data of mdm trail 6 from the Mendaram peat swamp in Brunei Darussalam

Water level data were obtained from logging pressure transducers (Solinst Levelogger Edge 3001, Solinst Canada, Georgetown, Ontario, Canada) corrected for barometeric fluctuations using a barometer (Solinst Barologger Gold 3001). Each transducer was suspended on a steel cable inside a 2" PVC pipe 1.5 m in length installed to 1.4 m depth and screened at 1.3--1.45 m below the top of the piezometer casing. Piezometers were developed prior to measurement by repeatedly plunging and removing a solid rod into the piezometer tube. The details of how the surface datum was obtained are described in Cobb et al (2017, doi:10.1073/pnas.1701090114).