III, IIB, iIC portlashi xavfli gaz zonasi va prognozidan foydalanish uchun javob beradi2.
Yashash qobiliyatli chang IIIa, IIIB, IIIIik zonasi 21 va 22-zona
Sobiq belgi:
Ex DB IIC T * GB, sobiq tb iiik t * db.