PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/07-18:58:10
G01     320.3          14.5               11.8 +/-    1.58      29.7 +/-    1.58  0.030 / 0.030
G08     259.1          15.4                9.8 +/-    1.58      24.1 +/-    1.58  0.030 / 0.040
G10     73.4           54.8               12.2 +/-    0.41      14.6 +/-    0.41  0.070 / 0.050
G11     305.7          21.9               10.8 +/-    1.40      22.7 +/-    1.40  0.070 / 0.050
G14     284.9          69.9               12.2 +/-    0.81      12.9 +/-    0.81  0.120 / 0.310
G20     101.7          32.0               12.4 +/-    0.54      20.9 +/-    0.54  0.110 / 0.260
G27     229.1          12.2               11.9 +/-    6.07      31.7 +/-    6.07  0.090 / 0.300
G31     179.5          34.6               14.6 +/-    1.31      23.4 +/-    1.31  0.190 / 0.370
G32     356.1          70.8               12.9 +/-    0.67      13.6 +/-    0.67  0.120 / 0.370