The 35-cm East sensor had several problems before failing permanently in 2007:
20061208.2000-20070306.2000: temperature rise reported values of -9999, and soil
temperature reported abnormally high temperature values.
20070813.1200-20070912.1300: all variables reported as -9999, including soil temperature.
A very small number of soil temperature values were reported as unusually high
temperature values after 09/10/07.
20070912.1300-20070915.1600: incorrect values of temperature rise reported (near 0 C),
and soil temperature values incorrect and unusually high.
20071110.0000-20071115.2300: incorrect values of temperature rise reported near 0 C or
unusually low. Values of soil temperature OK.
20071128.0000-->: Except for two very brief recoveries (on the order of a few days), all
35cm E variables are reported as -9999.