Sao Tome and Principe vs South Africa: Standardised Precipitation-Evapotranspiration Index
Standardised Precipitation-Evapotranspiration Index over time
- Sao Tome and Principe
- South Africa
How they compare
Sao Tome and Principe currently reports -0.7011 against -0.7253 in South Africa, a difference of 0.0242.
The two have swapped places 26 times across 64 shared years of data; in 1960 it was Sao Tome and Principe ahead.
Sao Tome and Principe ranks 114th and South Africa ranks 117th of 189 countries.
Across the 7 decades both report, Sao Tome and Principe averaged higher in 5 and South Africa in 2.
Head to head by decade
| Decade | Sao Tome and Principe | South Africa | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 0.4024 | -0.0403 | 0.4427 | Sao Tome and Principe |
| 1970s | -0.0607 | 0.7691 | 0.8298 | South Africa |
| 1980s | -0.3592 | 0.0686 | 0.4278 | South Africa |
| 1990s | -0.0169 | -0.1678 | 0.1509 | Sao Tome and Principe |
| 2000s | 0.1328 | -0.2812 | 0.414 | Sao Tome and Principe |
| 2010s | -0.4008 | -1.2 | 0.8002 | Sao Tome and Principe |
| 2020s | -0.1395 | -0.2037 | 0.0642 | Sao Tome and Principe |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher standardised precipitation-evapotranspiration index, Sao Tome and Principe or South Africa?
- Sao Tome and Principe, at -0.7011 against -0.7253 in South Africa as of 2023.
- What is the difference in standardised precipitation-evapotranspiration index between Sao Tome and Principe and South Africa?
- 0.0242, with Sao Tome and Principe ahead.
- How many years of comparable data are there for Sao Tome and Principe and South Africa?
- 64 years are reported by both, from 1960 to 2023.
- How do Sao Tome and Principe and South Africa rank globally for standardised precipitation-evapotranspiration index?
- Sao Tome and Principe ranks 114th and South Africa ranks 117th of 189 countries.
- Where does this data come from?
- Global SPEI database (SPEIbase). https://spei.csic.es/database.html, published as Standardised Precipitation-Evapotranspiration Index. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
The SPEI fulfills the requirements of a drought index since its multi-scalar character enables it to be used by different scientific disciplines to detect, monitor, and analyze droughts. Like the sc-PDSI and the SPI, the SPEI can measure drought severity according to its intensity and duration, and can identify the onset and end of drought episodes. The SPEI allows comparison of drought severity through time and space, since it can be calculated over a wide range of climates, as can the SPI.