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[111], 'an': [113], 'infiltration': [114], 'factor': [115], '0.21,': [117], 'contributed': [122], 'approximately': [123, 171], '52%': [124], '42%': [126, 172], 'for': [130], 'seasons,': [134], 'respectively.': [135], 'Meanwhile,': [136], 'mean': [138], 'indoor/outdoor': [139], '(I/O)': [140], 'ratio': [141], '0.73': [146], '0.54.': [148], 'Finally,': [149], 'adjusted': [151], 'level': [154], 'integrating': [155], 'outdoor': [159], 'impact': [160], 'calculated': [162], '46.8': [165], '27.4': [167], 'estimation': [175], 'only': [176], 'relied': [177], 'concentration.': [181], 'This': [182], 'is': [184], 'first': [186], 'attempt': [187], 'employ': [189], 'big': [190], 'data': [191], 'commercial': [193], 'evaluate': [197], 'risk': [202], 'may': [206], 'instrumental': [208], 'pollution': [212], 'control.': [213]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2804730857', 'counts_by_year': [{'year': 2024, 'cited_by_count': 3}, {'year': 2023, 'cited_by_count': 8}, {'year': 2022, 'cited_by_count': 5}, {'year': 2021, 'cited_by_count': 5}, {'year': 2020, 'cited_by_count': 10}, {'year': 2019, 'cited_by_count': 7}], 'updated_date': '2024-09-17T19:52:36.946419', 'created_date': '2018-06-01'}