The gawking wasn't quite as great as for the show's fifth-season debut, but the Gosselins scored big with the Nielsens for TLC Monday night.
Both new telecasts of Jon & Kate Plus 8 at 9 p.m. and 9:30 p.m. set cable's primetime pace in households, viewers, key demos and women's groups on June 1, according to network officials.
The 9 p.m. show averaged 5.5 million viewers, serving as a strong lead-in to the night's second installment, which posted a 4.3 household rating and 5.9 million watchers on average, according to Nielsen Media Research data.
Jon and Kate Plus 8 at 9:30 p.m. was the No. 1 program of the night for ratings and delivery, beating all of broadcast and cable among women 18 to 49, persons18 to 34 and women 18 to 34.
Meanwhile, the twin installments ranked as the top two programs of the night for ratings and delivery, beating all of the broadcast and ad-supported cable among persons 18 to 34 and women 18 to 34.
On Memorial Day, the series fifth-season premiere, fueled by interest in the parents' putative extra-marital affairs and cries of child exploitation for their brood of eight, drew a TLC record 9.8 million viewers.
That episode doubled the 4.6 million who tuned in the series' fourth-season concluder on March 23. As such, the June 1 episodes rank as the second and third most-watched installments in the show's history.