Sentences with phrase «substantial variation across»

There is substantial variation across coal - fired power plants, however, especially in terms of air - quality related emissions, with damages typically greater for older plants and less for newer ones.

There was also substantial variation across breeds in the number of inherited disorders (median 32.5, range 10 — 77) and longevity (surveys: median 11.45 years, range 6.3 — 14.3; veterinary hospital records: median 6.5 years, range 3.5 — 9.1).

In addition to the variation across districts, there is substantial variation across schools within each district.

Prevalence rates exhibited substantial variation across age, sex, and countries, with rates below 5 percent for women in some African countries to more than 50 percent for men in countries such as Indonesia, Armenia, Laos, Papua New Guinea and Russia.

Not exact matches

Quantifying the value of E accurately is difficult, and the variation across the models is substantial, primarily reflecting our incomplete knowledge of aerosol forcing.

This analysis makes clear that large differences in the performance of high - SES students and low - SES students in the same schools do exist; that these apparent gaps are not simply reflective of gaps in preparation; and that while the variation across school districts is substantial, the variation within school districts may be even larger (at least among the largest districts in Florida).

[5] At the beginning of the study period in 2001, there was substantial variation in quality across charter schools and, on average, charter schools in Texas were less effective than traditional public schools.

Appendix Figure 2 shows the substantial difference in average net prices charged to low - income students (publics charge substantially less, on average), although there is greater variation in the distribution of prices across private, non-profit colleges.

Despite these promising results, the team was seeing substantial variation in success rates across the network and decided to better understand what works for whom and under what conditions.

But while assessment tests were standard practice, there was substantial variation in the types of other measures used across colleges and across subjects.

``... the ecological and conservation significance of these kill tallies is difficult to contextualise, because (1) there are no reliable estimates of the total population of birds in Australia; (2) predation may fall disproportionately on some bird species; (3) some bird species may be able to sustain high mortality rates and maintain viable populations but others may not; and (4) as demonstrated here, there is substantial spatial variation in the numbers and proportion of birds killed across Australia.»

Variation across gas plants is less, though still substantial, with the best combined - cycle plants having nearly twice the efficiency (and hence roughly half the damages) of typical steam or centralized turbine plants, and lower damages even than the cleanest coal - fired plants.