PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/25-02:12:40
G02     22.8           64.1                7.9 +/-    0.56       8.6 +/-    0.56  0.170 / 0.080
G05     151.7          51.8               12.1 +/-    0.42      15.0 +/-    0.42  0.080 / 0.080
G06     47.9           25.1                8.1 +/-    1.37      15.8 +/-    1.37  0.030 / 0.020
G12     234.2          78.6               10.3 +/-    0.40      10.5 +/-    0.40  0.020 / 0.030
G19     90.0           17.8               10.0 +/-    1.26      23.1 +/-    1.26  0.030 / 0.050
G24     216.2          10.9               12.6 +/-   16.81      34.5 +/-   16.81  0.020 / 0.040
G25     310.4          43.6                9.1 +/-    0.81      12.5 +/-    0.81  0.290 / 0.610
G29     298.7          19.2                7.9 +/-    1.13      17.8 +/-    1.13  0.220 / 0.470