Looks like it could have been CD 27 with a coverline of 97.9. A lot of your temps are sitting right at the coverline though or dipping below it.
Yes, you may be correct because it is higher than the previous six temperatures.
Have you considered changing your chart settings so a CL is shown on your chart? This will make it easier to read. You can also adjust the setting to show O based on temps only and that helped me a lot. Choose the settings option next to your chart.