PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/27-20:58:10
G07     43.8           69.8               14.3 +/-    0.82      15.1 +/-    0.82  0.060 / 0.070
G08     55.1           45.2               10.9 +/-    0.83      14.6 +/-    0.83  0.050 / 0.080
G09     179.3          39.5               17.5 +/-    0.51      25.6 +/-    0.51  0.040 / 0.070
G11     123.6          33.3               17.1 +/-    1.14      28.0 +/-    1.14  0.040 / 0.080
G18     106.6          15.3               15.9 +/-    1.10      39.3 +/-    1.10  0.050 / 0.120
G28     273.2          52.0               14.2 +/-    1.18      17.5 +/-    1.18  0.050 / 0.130
G30     334.0          60.7               13.4 +/-    0.88      15.1 +/-    0.88  0.120 / 0.230