Give you a statement and table with its title in Markdown format, please determine whether the statement is supported or refuted by, or is unrelated to the table. It'a binary classification problem, you should choose the answer between supported and refuted. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| vehicle | operating mode | epa rated all - electric range | epa rated combined fuel economy | clean electric grid california (san francisco) | us national average electric mix | dirty electric grid rocky mountains (denver) |
| mitsubishi i - miev | all - electric | - | 112 mpg - e (30 kw - hrs / 100 mi) | 100 g / mi (62 g / km) | 200 g / mi (124 g / km) | 290 g / mi (180 g / km) |
| ford focus electric | all - electric | - | 105 mpg - e (32 kw - hrs / 100 mi) | 110 g / mi (68 g / km) | 210 g / mi (131 g / km) | 310 g / mi (193 g / km) |
| bmw activee | all - electric | - | 102 mpg - e (33 kw - hrs / 100 mi) | 110 g / mi (68 g / km) | 220 g / mi (137 g / km) | 320 g / mi (199 g / km) |
| nissan leaf | all - electric | - | 99 mpg - e (34 kw - hrs / 100 mi) | 120 g / mi (75 g / km) | 230 g / mi (143 g / km) | 330 g / mi (205 g / km) |
| chevrolet volt | electricity only ( charge - depleting ) | - | 94 mpg - e (36 kw - hrs / 100 mi) | 190 g / mi (118 g / km) (1) | 260 g / mi (162 g / km) (1) | 330 g / mi (205 g / km) (1) |
| smart ed | all - electric | - | 87 mpg - e (39 kw - hrs / 100 mi) | 130 g / mi (81 g / km) | 260 g / mi (162 g / km) | 380 g / mi (236 g / km) |
| coda | all - electric | - | 73 mpg - e (46 kw - hrs / 100 mi) | 160 g / mi (99 g / km) | 300 g / mi (186 g / km) | 440 g / mi (273 g / km) |
Title:
plug - in electric vehicles in the united states
Statement:
when dirty electric grid rocky mountains (denver) is 380 g / mi (236 g / km) , the us national average electric mix is 260 g / mi (162 g / km)
Answer:
supported