As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLIMBING OUT AT ABOUT 6,000 FEET, GOT AN EFIS COMP MON CAUTION MESSAGE FOLLOWED BY AMBER ALT FLAGS ON BOTH ALTIMETER TAPES. RETURNED TO FIELD. REMOVED CONTAMINATION FROM 1-2 STATIC PARTS ON PITOT/STATIC TUBES, PER MM 34-11-00-100-801. OPERATIONAL CHECKS GOOD.