PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/19-15:58:10
G02     210.7          48.1               11.6 +/-    0.74      15.0 +/-    0.74  0.060 / 0.070
G06     86.7           78.0               11.7 +/-    0.47      11.9 +/-    0.47  0.050 / 0.080
G12     316.7          32.7                8.9 +/-    1.81      14.7 +/-    1.81  0.070 / 0.090
G17     51.0           36.8                7.0 +/-    0.84      10.8 +/-    0.84  0.080 / 0.100
G19     22.6           57.5               10.8 +/-    0.37      12.5 +/-    0.37  0.030 / 0.030
G24     275.5          43.1                7.9 +/-    1.06      10.9 +/-    1.06  0.030 / 0.030
G28     116.1          20.4               10.2 +/-    0.99      22.2 +/-    0.99  0.040 / 0.040