PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/21-03:57:40
G01     120.9          14.5                7.6 +/-    1.09      19.2 +/-    1.09  0.030 / 0.030
G07     67.5           68.4                7.3 +/-    0.55       7.8 +/-    0.55  0.030 / 0.030
G08     47.2           35.2                5.7 +/-    0.97       9.1 +/-    0.97  0.110 / 0.070
G09     174.7          28.1                7.5 +/-    2.10      13.7 +/-    2.10  0.070 / 0.060
G11     117.1          39.0                8.4 +/-    0.79      12.5 +/-    0.79  0.080 / 0.140
G13     319.1          16.9                5.1 +/-    2.23      12.2 +/-    2.23  0.110 / 0.110
G17     199.8          19.6                7.0 +/-    1.78      15.6 +/-    1.78  0.150 / 0.300
G28     274.0          48.8                7.1 +/-    3.42       9.1 +/-    3.42  0.130 / 0.210
G30     332.9          61.7                6.4 +/-    1.00       7.2 +/-    1.00  0.060 / 0.080