PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/23-10:58:10
G02     204.3          33.1                6.5 +/-    2.60      10.8 +/-    2.60  0.190 / 0.290
G06     157.5          70.0                7.2 +/-    0.71       7.6 +/-    0.71  0.260 / 0.180
G12     308.2          17.2                4.2 +/-    2.43       9.9 +/-    2.43  0.080 / 0.070
G17     38.6           46.8                4.9 +/-    1.99       6.5 +/-    1.99  0.100 / 0.140
G19     353.4          66.3                4.5 +/-    0.51       4.8 +/-    0.51  0.040 / 0.030
G24     293.8          40.8                7.1 +/-    6.02      10.1 +/-    6.02  0.050 / 0.030
G28     102.4          31.9                6.8 +/-    0.88      11.4 +/-    0.88  0.040 / 0.040