24914
Group 1S is 0 . 10 , 0 . 11 , 0 . 20 and 0 . 20 mg / m ( 3 ) , group 5S is 0 . 50 , 0 . 55 , 1 . 00 and 1 . 00 mg / m ( 3 ) , group 10S is 1 . 00 , 1 . 10 , 2 . 00 and 2 . 00 mg / m ( 3 ) , which , respectively , corresponded to 1 , 5 and 10 times of indoor air quality standard ( IAQS ) in China .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None