Research on Ecoenvironmental Quality Evaluation System Based on Big Data Analysis

Table 8

Statistical table of heat index of remote sensing data in each period.

Heat index	Minimum value	Maximum value	Mean value	Standard deviation
1991	12.322	34.202	20.298	1.781
2000	13.274	37.514	23.247	1.836
2004	14.218	34.430	21.577	1.678
2010	4.909	25.688	14.163	1.949
2013	15.001	38.442	24.922	1.938
2018	12.198	34.556	23.231	1.599
2019	18.372	41.317	26.207	1.883