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Table 1 Summary of the spirometry values of the workers

From: Experience and limited lighting may affect sleepiness of tunnel workers

Variable Mean SD
FEV1 (%) 96,39 11,42
FVC (%) 94,28 10,65
FEV1/FVC 103 10,19
PEFR (l/min) 88,75 18,3
SpO2 (%) 97,69 1,14