HaI Phong الأوزون (O₃) المستوى

1.

Ho Chi Minh City, Ho Chi Minh

جيد

1xbelow Standard

2.

Tra Vinh, Tra Vinh

جيد

2xbelow Standard

3.

Lang Son, Lang Son

جيد

2xbelow Standard

4.

Cao Bang, Cao BaNg

جيد

2xbelow Standard

5.

Quy Nhon, Binh Dinh

جيد

2xbelow Standard

6.

Thanh pho Thai Nguyen, Thai Nguyen

جيد

3xbelow Standard

7.

Nha Trang, Khanh Hoa

جيد

3xbelow Standard

8.

Bac Giang, Bac Giang

جيد

3xbelow Standard

9.

Bac Ninh, Bac Ninh

جيد

3xbelow Standard

10.

Lao Cai, Lao Cai

جيد

4xbelow Standard