| Year | Elephant | |||||||
| EKM-01 | EKM-02 | EKM-03 | EKM-06 | WKF-16a1 | WKF-18 | WKM-10 | WOM-01 | |
| 2003 | I/D | Image | Image | I/D | Image | Image | Image | I/D |
| 2004 | I/D | I/D | Image | Image | I/D | I/D | I/D | I/D |
| 2005 | Image | Image | Image | Image | I/D | I/D | Image | I/D |
| 2006 | I/D | I/D | Image | Image | I/D | I/D | I/D | Image |
"I/D" indicates there are insufficient tracking data available for that time frame.
