PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/25-12:12:30
G01     88.8           32.0                4.4 +/-    0.66       7.5 +/-    0.66  0.020 / 0.030
G07     126.6          44.3                5.8 +/-    0.83       7.9 +/-    0.83  0.020 / 0.020
G11     65.9           38.3                4.4 +/-    0.83       6.6 +/-    0.83  0.040 / 0.050
G13     292.9          36.6                6.6 +/-    2.37      10.2 +/-    2.37  0.040 / 0.050
G17     214.8          56.7                6.8 +/-    0.82       8.0 +/-    0.82  0.100 / 0.080
G18     61.9           23.2                3.5 +/-    1.88       7.1 +/-    1.88  0.110 / 0.080
G19     215.4          24.6                6.3 +/-    3.16      12.5 +/-    3.16  0.110 / 0.110
G28     350.7          61.7                4.5 +/-    0.41       5.0 +/-    0.41  0.090 / 0.090
G30     104.2          77.1                5.2 +/-    0.32       5.3 +/-    0.32  0.070 / 0.140