PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/15-12:58:00
G01     54.0           27.6                4.7 +/-    2.12       8.7 +/-    2.12  0.040 / 0.050
G06     177.9          19.8              -17.2 +/-   29.12     -38.1 +/-   29.12  0.040 / 0.040
G07     143.6          15.2                4.9 +/-    2.54      12.2 +/-    2.54  0.150 / 0.400
G11     46.2           20.7                5.1 +/-    2.50      11.1 +/-    2.50  0.140 / 0.410
G13     255.3          34.1                7.5 +/-    1.36      12.1 +/-    1.36  0.030 / 0.020
G15     289.6          16.0                5.0 +/-    1.77      12.1 +/-    1.77  0.030 / 0.030
G17     267.1          76.0                7.4 +/-    0.56       7.6 +/-    0.56  0.090 / 0.090
G19     238.0          56.9                6.8 +/-    2.32       7.9 +/-    2.32  0.100 / 0.080
G28     33.0           58.5                6.1 +/-    1.24       7.0 +/-    1.24  0.130 / 0.170
G30     147.0          47.5                6.6 +/-    0.42       8.7 +/-    0.42  0.130 / 0.170