PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/04-00:58:00
G02     204.0          40.7               14.4 +/-    2.11      20.7 +/-    2.11  0.120 / 0.140
G06     152.9          73.3               12.2 +/-    1.48      12.7 +/-    1.48  0.090 / 0.120
G12     309.8          18.0                9.9 +/-    1.79      22.8 +/-    1.79  0.070 / 0.220
G17     36.4           49.3                9.5 +/-    0.21      12.1 +/-    0.21  0.100 / 0.130
G19     9.0            62.9               10.1 +/-    0.90      11.2 +/-    0.90  0.040 / 0.090
G24     293.4          39.7                9.9 +/-    0.97      14.4 +/-    0.97  0.040 / 0.080
G28     106.8          27.9               10.7 +/-    1.56      19.6 +/-    1.56  0.030 / 0.050