01 151.00 KAT-TUN - CHAIN
02 49.50 Fukumimi + ALL STARS - ALL SONGS MUST PASS -Office Augusta 20th Anniversary BEST-
03 25.50 AI - INDEPENDENT
04 25.00 Horie Yui - Himitsu
05 23.30 Matsushita Yuya - 2U
06 21.30 Sean Paul - Tomahawk Technique
07 21.00 Alice Nine - "9"
08 18.60 LiSA - LOVER"S"MiLE
09 18.50 VALSHE - PLAY THE JOKER
10 17.60 Berryz Koubou - Ai no Album ⑧
01 201.00 Hey!Say!JUMP - SUPER DELICATE
02 167.10 Nogizaka46 - Guruguru Curtain
03 60.60 AAA - SAILING
04 37.30 w-inds. - FLY HIGH
05 35.80 GACKT - UNTIL THE LAST DAY
06 28.00 SCANDAL - HARUKAZE
07 24.90 See-Saw, Lacus Clyne (Tanaka Rie) - Annani Issho Datta no ni ~ReTracks
08 23.50 Aqua Timez - MASK
09 23.20 Mano Erina - Doki! Doki! Baby! / Tasogare Kousaten
10 22.30 D☆DATE - JOKER
The NINKI ratings are the results of a POLL conducted by Oricon indicating degree of interest/degree of purchase intention in an upcoming release. Although the ratings are never a true reflection of sales, it does give a strong prediction about where the single/album will place in terms of popularity amongst the Japanese public. However, they are NOT an indication of how it will perform in terms of chart positioning and total sales for the week.
According to Oricon's note under the NINKI page, Oricon researches about 870,000 of its members by random sampling of 400 members in their 10s until 40s. 50 men and 50 women are chosen randomly to participate in each age group. (However, some popular artists have had NINKI exceeding 500, so we can only assume that Oricon has extended the polling to around 600/700 people now.)
That's a pretty high 'expectation' for Nogizaka46, IMO. Anyway, good luck to everybody!
Source 1, 2