The Productivity Dynamics of China’s Environmentally Friendly Production Technologies in terms of Wastewater Treatment Techniques

Table 1

Descriptive statistics of the variables, 2002–2015.

Variables	Units	Mean	Std.D.	Min	Max	Median	Obs.
K	Billion Yuan	2755	2518	129	13882	1977	420
L	Thousand Person	24667	16325	2470	66360	20605	420
W	Billion Cubic meters	20	14	2	59	18	420
Real GDP	Billion Yuan	900	849	32	4795	643	420
WD	Million tce	1962	1580	111	9115	1491	420