numbers showed a 4.5 rating in the key demographic, and Nielsen ratings were a 3.7. The results helped CBS's primetime growth-leadership that fall, CBS's Monday night having improved more than any other night, not only for CBS, but also more than any night for any of the "Big 4" networks. The increase in CBS's own ratings in the Monday 10 pm time slot was sizeable - a 65% total-audience increase over the same period a year earlier, and a 23% boost since that period for the age 18-49 audience. Even after it was detached from The Big Bang Theory, the show continued to rank as the second-most popular new drama on CBS. In the older-focused 25- to 54-year-old audience demographic segment, Scorpion initially averaged a 4.9, the second-highest ranking new show in that audience, improving the network's previous-year performance in that time slot by 29%. (L+7's measurement of 25-54 year olds put Scorpion at 6.0.) Scorpion initial popularity extended beyond immediate-broadcast audiences, to include delayed-viewing audiences, making Scorpion CBS's most-streamed new show of the season, initially, across multiple platforms. Critical reception Scorpion has received mixed reviews from critics. On Rotten Tomatoes, season one holds a rating of 42% based on 48 reviews, with an average rating of 5.1/10. The site's critical consensus reads, "Typical procedural plot lines and boring characters using a distracting amount of geek-speak make Scorpion a forgettable show without sting." On Metacritic, the show has a score of 48 out of 100, based on 24 critics, indicating "mixed or average reviews". The show premiered on September 22, 2014, earning a 3.2 rating in the 18–49 demographic and 13.83 million total viewers. This improved CBS' Monday 9 p.m. time slot from the previous season by 66% in total viewers and 22% in the 18–49 demographic. It was also Monday's top new series in viewers and key demographics. The number of viewers during the first season across all platforms was 26 million. Broadcast Scorpion was picked up in 14 countries, including in the UK by ITV2 for broadcast starting on October 23, 2014. The series premiered in fall on RTÉ2 in Ireland. Australian Network Ten began airing the show on September 28. In New Zealand, Prime began airing the show on October 10. The show aired in Canada on City simultaneously with CBS. The series aired on Universal Channel in Italy on February 17, 2015. A special 63-minute episode,