As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF ROLL, THE CREW OBSERVED A 20 KT DIFFERENTIAL BETWEEN ASIS. THE TAKEOFF WAS REJECTED AND THE AIRCRAFT RETURNED TO RAMP. MAINTENANCE CLEARED DEBRIS FROM THE CAPT'S PITOT PROBE AND CONDUCTED A SYSTEM LEAK CHECK. THE AIRCRAFT WAS RETURNED TO SERVICE.