76580
The target frequency is then adjusted by up to ± 0.01 " Hz ( ± 0.02 % ) from 50 " Hz as needed , to ensure a long-term frequency average of exactly 50 " Hz × 60 " s / min × 60 " min / h × 24 " h / d = cycles per day .
 s, min, h, d
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 s, min, h, d