(6) s1 = SMOGRA ≤ 30m2s- 2 and TSP600s ≤ 50m2; s2 = SMOGRA ≤ 180m2s- 2 and TSP600s ≤ 200m2; s3 = not s1 or s2.
(-6) s1 = SMOGRA ≤ 30 м-2с-2 та TSP600s ≤ 50 м-2; s2 = SMOGRA ≤ 180 м-2с-2 та TSP600s ≤ 200 м-2; s3 = не s1 або s2.