• add reading class for colocated data files
• ad scatterplot
  example:
  

URL link to current interface for pasting in eg email
https://aerocom.met.no/cgi-bin/surfobs_annualrs.pl?PROJECT=C3S-Aerosol&MODELLIST=C3S-Aerosol-SLSTR&FULL=explicit&INFO=nohover&PERFORMANCE=ind&YEARFILTER=ALLYEARS&PSFILTER=ALLVARS&Type0=SCATTERLOG&Ref0=AeronetSunV3Lev2.0.daily&Run0=SLSTR_SU_v1.12&Parameter0=OD550_AER&Station0=WORLD&Year0=an2018&Period0=mALLYEAR