The experimental dataset used to create the figures in the paper Yagafarov T., Sannikov D., Zasedatelev A., Georgiou K., Baranikov A., Kyriienko O., Shelykh I., Gai L., Shen Z., Lidzey D., Lagoudakis P., (2019). Mechanisms of blueshifts in organic polariton condensates. Commun Phys 3, 18 (2020). https://doi.org/10.1038/s42005-019-0278-6</span