"The paper says the plume originated from a a 10 m-high wall around a circular dip in the surface and continued for between 14 and 68 minutes. The event saw between 6,500 and 118,000kg of material ejected."
Those seem like pretty huge error bounds. That's akin to saying "I had the bath on for between 5 and 25 minutes. Also, the temperature was somewhere between 10 and 180 degrees...so maybe you shouldn't dip your toe in there just in case".