SGP/EBBR/E20 - Aspirator Fan Stoppage

During Site Operations Preventative Maintenance activities the left AEM fan
stopped operating.  This affected some of the data being collected.  The
times of incorrect values are listed below.

15 minute: 1530-1715 GMT; tair_l, mv_hum_l, rr_thum_l
30 minute: 1530-1730 GMT; thum_top, thum_bot, tair_top, tair_bot, hum_top,
                          hum_bot, e, h, bowen

• temp_trh_bottom
• vapor_pressure_bottom
• rh_top_fraction
• rh_bottom_fraction
• sensible_heat_flux
• bowen_ratio
• vapor_pressure_top
• temp_air_top
• temp_air_bottom
• latent_heat_flux
• temp_trh_top

• temp_air_left
• rh_left_mv
• temp_trh_left_rr