PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/05-19:58:10
G01     320.7          12.0                0.7 +/-   34.13       2.0 +/-   34.13  0.160 / 0.370
G08     263.7          16.5               19.2 +/-    1.68      46.0 +/-    1.68  0.090 / 0.190
G10     67.2           57.4               12.2 +/-    1.13      14.2 +/-    1.13  0.070 / 0.080
G11     309.2          19.2               12.4 +/-    1.34      27.9 +/-    1.34  0.050 / 0.080
G14     277.1          68.4               15.0 +/-    0.52      15.9 +/-    0.52  0.030 / 0.020
G18     96.2           32.5               11.9 +/-    1.09      19.8 +/-    1.09  0.030 / 0.020
G27     227.9          12.9               18.7 +/-    2.25      49.0 +/-    2.25  0.360 / 0.370
G31     179.3          32.5               19.0 +/-    2.31      31.7 +/-    2.31  0.200 / 0.240
G32     346.4          72.5               13.7 +/-    0.52      14.3 +/-    0.52  0.050 / 0.040