Hi, my name is Justin, and I am a software developer.
First of all, nice website. I've done several php with sql projects, and I am fluent in both php and sql language.
Some clarification, I do not understand this sentence "As you can see, there are added rows of data in the first table.... "; I couldn't spot the difference.
My take is you needed a developer to code php for your website, to delete certain rows or data from your tables within a certain given criteria, such as mean, max, min temps, etc. I will be happy to do that.
If you could kindly clarify the work to be done, I could adjust down my bid when I could give a better estimation of the scope of work. However this is optional, and we can still proceed this way if you prefer. Thank you, and have a good day.