SciFi Channel's miniseries finds ratings gold

SciFi Channel’s “Tin Man” looks like ratings gold, with Sunday’s premiere installment of the six-hour miniseries notching the cabler’s biggest ratings ever.

According to prelim fast national Nielsen data, night one of the “Wizard of Oz”-inspired mini attracted 6.4 million total viewers, 3.4 million of whom were adults 18-49. That bettered the 6.1 million who tuned in for the premiere of Steven Spielberg’s “Taken,” previously the most watched cablecast on the NBC U net.

“Tin Man” also gave Sci Fi its biggest demo ratings ever, outshining “Dune” in adults 18-49 and “Taken” among viewers 25-54.

Strong ratings for “Tin Man” come despite a spate of mixed-to-negative reviews for the project. Sci Fi invested heavily in promotion for the event, the latest in a string of December miniseries the cabler has run in recent years.

Follow @Variety on Twitter for breaking news, reviews and more