Chad vs Romania: Ozone (O₃) concentration
Chad
60 ppb
in 2015
Romania
59 ppb
in 2015
Chad rank
66th
Romania rank
69th
Ozone (O₃) concentration over time
- Chad
- Romania
How they compare
Chad currently reports 60 ppb against 59 ppb in Romania, a difference of 1 ppb.
The two have swapped places 1 time across 7 shared years of data; in 1990 it was Romania ahead.
Chad ranks 66th and Romania ranks 69th of 187 countries.
Across the 3 decades both report, Chad averaged higher in 1 and Romania in 2.
Head to head by decade
| Decade | Chad | Romania | Difference | Ahead |
|---|---|---|---|---|
| 1990s | 60 ppb | 62 ppb | 2 ppb | Romania |
| 2000s | 60 ppb | 60.5 ppb | 0.5 ppb | Romania |
| 2010s | 60 ppb | 59.33 ppb | 0.6667 ppb | Chad |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher ozone (o₃) concentration, Chad or Romania?
- Chad, at 60 ppb against 59 ppb in Romania as of 2015.
- What is the difference in ozone (o₃) concentration between Chad and Romania?
- 1 ppb, with Chad ahead.
- How many years of comparable data are there for Chad and Romania?
- 7 years are reported by both, from 1990 to 2015.
- How do Chad and Romania rank globally for ozone (o₃) concentration?
- Chad ranks 66th and Romania ranks 69th of 187 countries.
- Where does this data come from?
- Health Effects Institute (2017) – processed by Our World in Data, published as Ozone (O₃) concentration. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Population-weighted average ozone (O₃) concentrations in parts per billion (ppb). Local concentrations of ozone are recorded and estimated at a 11x11km resolution. These values are subsequently weighted by population-density for calculation of nation-level average concentrations.