Now let us look at this record from Ranong, Thailand. I hope you can see right away that this one looks a whole lot different from the last one we just looked at. The reason why is that this is analog data. The way this works is that you have got this gridded piece of paper. It is attached to a cylindrical drum that continuously rotates. There is a pen attached to a spring that writes on the paper. When the spring receives an electrical impulse from the height of the water changing the pen follows along and you can see the tides that way. Let us do what I like to do when I am encountering new data that I have never seen before which is to first check out the axes and see what they say and then look at what is plotted after that. Let us look at the x axis first. Up here it says time scale: 1 line equals 10 minutes and one sheet equals one day. Okay so this is a sheet. This whole thing is one day. If we look down here we see the numbers 1, 2, 3, 4 up to 23. Each of these heavier lines is a hour, and these little thinner vertical lines are 10 minutes. The y axis is a little harder to read because it is not printed anywhere along the side. But they have got this little floating scale here that tells you what a meter is. In between these heavy lines is a meter. Now let us look at what is plotted. This data record starts right here on December 25, 2004, at 8 o’clock in the morning. We can confirm that by seeing where the pen mark starts and going down here and seeing that there is the 8. We can see a high tide here and a low tide here. Here is another high tide and now we get to midnight. And my guess is that all the operators were on holiday because nobody came along and changed the paper. The drum keeps turning around and so when it got to be the 26th it just overprinted what the previous record was. So we go over here to the left and now here is December 26 and the line is being drawn along and right here is where the tsunami arrives. You can see a big excursion from this little skinny line back here which is the model prediction of what the tides should be. You couldn’t even see it before because the model and the data matched so well. Now that we have the tsunami you can see the model prediction. The tsunami affects height at this station well into the next day. Here is midnight on the 26th, still nobody came and changed the paper. Now here comes the 27th, and this record ends on December 27 at 8:18 in the morning.