Characteristics of Water Pollution and Evaluation of Water Quality in Subsidence Water Bodies in Huainan Coal Mining Areas, China

Table 1

Characteristic value and variance contribution of factor analysis of water quality indicators.

Factors	Characteristic value	Variance contribution rate/%	Cumulative variance contribution rate/%
1	3.196	35.511	35.511
2	2.238	24.868	60.379
3	1.972	21.915	82.294

Extraction method: a principal component analysis.