Warm spell events for the Thissio weather station for the years 1961-2021 using the CTX90pct climate index. Percentile values were computed using the years 1961-1990 as the base period. Results include only summer months (June to August). Source of raw maximum temperature (Tmax) data: [National Observatory of Athens (Founda, 2011)](https://data.climpact.gr/dataset/1a1f82e5-94da-4dd0-8b54-04016fc9574e/resource/0b5a67da-02ff-42f8-956f-841d387dbad0/download/hcd_noa_2.csv). The csv file includes 6 columns. The first 2 columns correspond to the first and the last day of the warm spell event (dd/mm/yyyy). The third column gives the duration of the warm spell in days. Columns 4 to 6 give the average, the standard deviation and the maximum value of Tmax (in degrees Celsius) during the warm spell.