Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Class | Wheel Arrangement | Railway | Number at Doncaster | Number at Pyewipe | Number at March |
| --- | --- | --- | --- | --- | --- |
| D13 | 4-4-0 | GER | 3.0 | 3.0 | 6.0 |
| D14 | 4-4-0 | GER | 0.0 | 0.0 | 1.0 |
| D15 | 4-4-0 | GER | 1.0 | 0.0 | 4.0 |
| E4 | 2-4-0 | GER | 1.0 | 0.0 | 4.0 |
| J14 | 0-6-0 | GER | 0.0 | 0.0 | 1.0 |
| J15 | 0-6-0 | GER | 0.0 | 3.0 | 17.0 |
| J16 | 0-6-0 | GER | 0.0 | 1.0 | 7.0 |
| J17 | 0-6-0 | GER | 0.0 | 2.0 | 15.0 |
| J18 | 0-6-0 | GER | 0.0 | 0.0 | 7.0 |
| J19 | 0-6-0 | GER | 0.0 | 0.0 | 8.0 |
| J20 | 0-6-0 | GER | 0.0 | 0.0 | 14.0 |
| J66 | 0-6-0T | GER | 0.0 | 3.0 | 10.0 |
| J67 | 0-6-0T | GER | 0.0 | 0.0 | 1.0 |
| J68 | 0-6-0T | GER | 0.0 | 0.0 | 1.0 |
Question:
Name the number at march when class is j66
Answer:
10.0