This tool can easily generate the mean and confidence interval of your data. Remember to only take the mean of similar data (i.e. same treatment and variable).
Access the calculator here: https://docs.google.com/spreadsheets/d/1YaRGTe267UrPklXDfBEZsJtB-PHbJf8PVzi9rboR_ig/edit?usp=sharing
This calculator was designed for experimental data with some measurement uncertainty. If you encounter any problems with the calculator, kindly let us know at firstname.lastname@example.org