GTSPP Data Product Centre| Year & Month(yyyymm) | observing line | Number of observations |
|---|---|---|
| 201906 | PX11 | 27 |
| 201907 | PX11 | 34 |
| 201908 | PX11 | 11 |
| 201910 | PX11 | 24 |
| 201911 | PX11 | 9 |
| 202001 | PX11 | 29 |
| 202002 | PX11 | 21 |
| 202003 | PX11 | 16 |
| 202004 | PX11 | 5 |
| 202005 | PX11 | 17 |
| 202006 | PX11 | 17 |
| 202008 | PX11 | 40 |
| 202010 | PX11 | 18 |
| 202012 | PX11 | 23 |
| 202101 | PX11 | 17 |
| 202102 | PX11 | 25 |
| 202110 | PX11 | 25 |
| 202111 | PX11 | 14 |
| 202112 | PX11 | 10 |
| 202201 | PX11 | 14 |
| 202202 | PX11 | 7 |
| 202203 | PX11 | 12 |
| 202204 | PX11 | 15 |
| 202206 | PX11 | 16 |
| 202207 | PX11 | 16 |
| 202211 | PX11 | 23 |
| 202212 | PX11 | 7 |
| 202302 | PX11 | 8 |
| 202303 | PX11 | 12 |