99999: No clouds detected. The meteorological mast has been relocated by about 40 m, leading to missing data between 15 August and 18 August 2011. Since 19 August 2011, the coordinates of the weather mast are 78.92225 N and 11.92645 E. On 18 August 2011, the humidity sensors have been exchanged from HMP233 to HMT337, and the temperature sensors have been replaced by new PT100 sensors. On 22 August 2011 at 16:08 UTC, the pressure sensor has been changed from digiquarz 740-16b situated inside the Blue House station building to digiquarz 6000-16b situated outside at the weather mast, now being 2.74 m higher than before.