PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/14-17:42:50
G02     215.0          57.2               10.9 +/-    0.71      12.7 +/-    0.71  0.100 / 0.280
G06     63.0           75.8               10.8 +/-    0.39      11.1 +/-    0.39  0.080 / 0.290
G12     317.1          32.9                8.1 +/-    1.74      13.4 +/-    1.74  0.050 / 0.050
G17     53.8           35.6                9.7 +/-    1.86      15.1 +/-    1.86  0.040 / 0.060
G19     38.3           49.3                9.7 +/-    1.15      12.3 +/-    1.15  0.070 / 0.090
G24     268.2          41.6               11.8 +/-    2.44      16.8 +/-    2.44  0.060 / 0.070
G28     119.6          20.3                7.7 +/-    3.30      16.9 +/-    3.30  0.050 / 0.080