Bac Giang الأوزون (O₃) المستوى

1.

Ho Chi Minh City, Ho Chi Minh

جيد

1xbelow Standard

2.

Tra Vinh, Tra Vinh

جيد

1xbelow Standard

3.

Nha Trang, Khanh Hoa

جيد

1xbelow Standard

4.

Quy Nhon, Binh Dinh

جيد

2xbelow Standard

5.

Pleiku, Gia Lai

جيد

2xbelow Standard

6.

Bac Giang, Bac Giang

جيد

2xbelow Standard

7.

Lao Cai, Lao Cai

جيد

2xbelow Standard

8.

Da Nang, Da Nang

جيد

2xbelow Standard

9.

Haiphong, HaI Phong

جيد

2xbelow Standard

10.

Thanh pho Thai Nguyen, Thai Nguyen

جيد

3xbelow Standard