## Quality and popularity formulas for the article **Earth** ^{EN}

$$Quality=1/c∑↙{i=1}↖c nm_i-RS=1/5(100+100+100+100+100)$$

where:

- $nm_i$ is normalized quality metric $i$
- $c$ is the number of quality metrics
- $RS$ is the reducing score (if exists)

$$GlobalAI(article)=|⋃↙{lang=1}↖55 Authors_{lang}(article)|=169$$

$$PopGlobal(article)=∑↙{lang=1}↖55 PopLocal_{lang}=17346$$

where:

- $i$ is an index of language version
- $AI$ means Authors’ Interest (number of authors)
- $Pop$ means popularity of the article (number of page views)
- $Authors(lang_i)$ is a set of unique names of the authors of article "Earth" in language $lang_i$ during September 2019
- $Pop(lang_i)$ is a popularity of article "Earth" in language $lang_i$ in September 2019

The results of the calculations may be slightly different because of rounded values of normalized metrics in formulas