Table 4 Statistical presentation of the input–output variables of thermal power
From: Energy efficiency in China: optimization and comparison between hydropower and thermal power
Variable | Mean | Std. dev | Max | Min |
|---|---|---|---|---|
Descriptive statistical analysis of thermal power | ||||
 Input | ||||
  Installed capacity | 3290.42 | 2406.95 | 10,335.00 | 235.00 |
  Energy | 4660.97 | 3714.04 | 15,427.17 | 515.66 |
  Hours | 4450.53 | 895.96 | 6173.00 | 1405.00 |
  Labor | 12.99 | 7.04 | 32.18 | 1.85 |
 Output | ||||
  Generation capacity | 1575.70 | 1395.59 | 7555.00 | 136.00 |
 Undesirable output | ||||
  CO2 | 11,424.99 | 9126.17 | 38,179.86 | 1212.11 |
Descriptive statistical analysis of hydropower | ||||
 Input | ||||
  Installed capacity | 1110.40 | 1589.65 | 7714.00 | 43.00 |
  Energy | 1123.53 | 1872.87 | 9236.01 | 12.28 |
  Hours | 2653.93 | 1152.39 | 4599.00 | 355.00 |
  Labor | 13.59 | 6.90 | 32.18 | 1.85 |
 Output | ||||
  Generation capacity | 371.15 | 634.39 | 3164.00 | 4.50 |