PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/07-17:58:00
G02     201.4          23.5               15.1 +/-    2.85      30.6 +/-    2.85  0.140 / 0.190
G06     166.2          59.7               12.7 +/-    0.39      14.5 +/-    0.39  0.320 / 0.370
G12     302.8          10.5               -6.3 +/-    8.75     -17.3 +/-    8.75  0.320 / 0.630
G17     25.6           57.1               10.0 +/-    0.87      11.6 +/-    0.87  0.040 / 0.040
G19     327.0          70.0               10.5 +/-    0.35      11.1 +/-    0.35  0.040 / 0.040
G24     306.4          33.3                8.8 +/-    1.74      14.4 +/-    1.74  0.070 / 0.130
G28     92.4           37.4               10.8 +/-    1.10      16.5 +/-    1.10  0.080 / 0.160
G30     157.8          11.4               12.3 +/-    2.05      33.2 +/-    2.05  0.050 / 0.030