highly significantp ≤ 0.0001
There are highly significant differences of SOD level between rural and urban (P value 0.0001) on the one hand and between rural and industrial area (p ≤ 0.0001) in other.
There are highly significant differences of SOD level between rural and urban (P value 0.0001) on the one hand and between rural and industrial area (p ≤ 0.0001) in other.