Table 6 Paired sample t-test of the heavy metals in pre-monsoon and post-monsoon seasons.

From: Spatial assessment of heavy metal contamination in groundwater in the Kadaladi region, Tamil Nadu, India

S.No

Trace metals

Mean

SD

Median

Correlation

t

Df

Sig

1

Cu

0.016

0.017

0.011

0.983

 − 3.235

43

0.002

2

Pb

0.001

0

0.001

1

0

0

0

3

Zn

0.184

0.024

0.184

1

0

0

0

4

Ni

0.001

0

0.001

1

0

0

0

5

Cd

0.001

0

0.001

0

0

0

0

6

Mn

0.001

0

0.001

0.999

0

0

0

7

Fe

0.005

0.006

0.005

0.99

0

0

0

Back to article page