 So, Sarah asks, if she has 10 thermometers worth of temperature data in 10-minute increments, but they didn't all start at the same time, is there a way to match up all the different thermometers? So, here, what we have is just five, so that if it's on the screen, well, five different temperature readings, T1, 2, 3, 4, and 5, and time stamps that are close, but not quite lined up all in 10-minute increments. I'm going to show you a way with VLOOKUP, and I'm going to also show you a kind of cheat way just using DELETE. So, let's make this smaller. I'm going to take these, copy and paste right here, that was CTRL C and CTRL V, and I'm going to remove the headers for T1, T3, T4, and T5 time, but I'm going to leave the one for T1, and then let's make all of these just a little bit smaller to fit in. You'll see why I left these blanks in a second. It's kind of a way to cheat because I'm incredibly lazy, and I like to copy and paste without typing. So, these time stamps, I'm going to CTRL C and CTRL V, these time stamps, make this a little bit bigger so you can see them. And then for T1, what we're going to say is equal VLOOKUP, and we want to look up this value, that time stamp right there. And I don't want the letter to change because I'm going to copy and paste this formula going to the right. I don't want the letter to progress, so I'm going to put a dollar sign on it so that the M stays in M, but I'm not going to put a dollar sign on the two because I do want the two to go down as I drag down. And what VLOOKUP is telling me is saying, look up this value in some table. So to put that table in there, I just need to put a comma. Now it says table array. What I want the table array to be is this table. So I'm looking for this value, M2, in this table, comma. The column index number is I want the second column to be returned from this table. There's only column one and column two, so it's pretty easy, but column two right there. And then the last one is it says true or false for this last statement. I'm going to go ahead and just click or type false. That means I want it to be exact. That's what false means, and it'll tell you that. And I'm going to end the parenthesis there, but before I go, I want the two from that table to always stay a two, and the 22 to stay a 22. So that when I drag down, those numbers don't change. Enter. So I'm going to double click this box right here in the lower right so that it auto-drags contiguous cells. And we'll see that sure enough, this table matches that table just like we wanted. So now what I'm going to do is take these results right here. Control C. I'm going to control V here. Control V here, and control V there. And now what that should do is line these all up, and you're like, well, why are these NAs here? Well, if we go back to T2, we'll see that it started at 430. So there is no value for 420, 410, and 4. Same for T3 and T5. Coming down, it looks like we could have come down a little bit further since some of these go to 740, but I'll just leave it there for now. Now what you could do if you want to graph this is only start right here, or you could graph it with the NAs. And that should do the trick. If you wanted to try kind of a way without formulas, it's just delete the data that you don't want in order to make all the times line up. So we can see that 430 is the latest start time. So we could just select and delete this stuff, delete shift cells up, OK, so that our 430s line up. And then this one, we only have to get rid of 420. I'm going to use Control Y, which just redos our last thing. And then 4 to 420, Control Y again, and 410 to 420, Control Y again. You can see all our 430s line up, and so we can now get rid of each of these timestamps just like that.