PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/14-14:27:40
G02     202.1          24.2                7.8 +/-    2.16      15.5 +/-    2.16  0.040 / 0.090
G06     165.6          61.0                8.6 +/-    0.48       9.6 +/-    0.48  0.040 / 0.100
G17     23.5           58.1                6.8 +/-    0.35       7.8 +/-    0.35  0.090 / 0.250
G19     346.3          69.1                6.2 +/-    0.39       6.6 +/-    0.39  0.090 / 0.290
G24     305.8          32.8                6.5 +/-    1.93      10.7 +/-    1.93  0.090 / 0.110
G28     90.2           41.6                6.9 +/-    0.63       9.8 +/-    0.63  0.070 / 0.110