PMC:7224658 / 1325-1498 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T17","span":{"begin":47,"end":54},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":" was analyzed using single linear regression.\n\nResults\nThe mean daily nationwide level of traffic for the first 3 months of 2020 was 143 655 563 vehicles, which was 9.7% low"}