NCIS is on Tues at 8.
I think the numbers would have been a lot higher, but 1) people know it will be rebroadcast a couple of hours later, 2) It's a show that you can get 'On Demand', which means that some people will watch a show that is not aired a few hours later, or available 'On Demand', first and then catch her show later.
Oh LOL thanks for the correction. My sister loves that show. I watched the re-broadcast as well. Some might have forgotten it was even on and when they were flipping around the stations, noticed it and started watching. I’m glad that TLC re-aired it, they are re-airing it tonight too