Nghe An الأوزون (O₃) المستوى

1.

Lang Son, Lang Son

جيد

1xbelow Standard

2.

Ho Chi Minh City, Ho Chi Minh

جيد

1xbelow Standard

3.

Cao Bang, Cao BaNg

جيد

2xbelow Standard

4.

Thanh pho Thai Nguyen, Thai Nguyen

جيد

2xbelow Standard

5.

Tra Vinh, Tra Vinh

جيد

2xbelow Standard

6.

Bac Giang, Bac Giang

جيد

2xbelow Standard

7.

Ha Long, Quang Ninh

جيد

2xbelow Standard

8.

Lao Cai, Lao Cai

جيد

2xbelow Standard

9.

Haiphong, HaI Phong

جيد

2xbelow Standard

10.

Hai Duong, Hai Duong

جيد

3xbelow Standard