
Year & Month(yyyymm) | observing line | Number of observations |
---|---|---|
201009 | PX11 | 41 |
201011 | PX11 | 40 |
201103 | PX11 | 45 |
201107 | PX11 | 3 |
201109 | PX11 | 38 |
201204 | PX11 | 18 |
201207 | PX11 | 49 |
201209 | PX11 | 26 |
201303 | PX11 | 44 |
201306 | PX11 | 45 |
201308 | PX11 | 43 |
201310 | PX11 | 12 |
201312 | PX11 | 46 |
201403 | PX11 | 26 |
201405 | PX11 | 49 |
201407 | PX11 | 30 |