NSA/MET/C1 - PWS calibration

The PWS was undergoing calibration. Any data collected during this time is not 
representative of the atmospheric state.

• pws_cumul_rain
• pws_precip_rate_mean_1min
• qc_pws_cumul_rain
• pws_pw_code_15min
• qc_pws_pw_code_15min
• qc_pws_pw_code_inst
• qc_pws_err_code
• pws_pw_code_inst
• qc_pws_precip_rate_mean_1min
• pws_vis_mean_10min
• qc_pws_pw_code_1hr
• pws_err_code
• pws_cumul_snow
• qc_pws_cumul_snow
• pws_pw_code_1hr
• qc_pws_vis_mean_10min
• qc_pws_vis_mean_1min
• pws_vis_mean_1min