PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/09-00:42:40
G02     205.0          43.1               13.6 +/-    0.37      18.8 +/-    0.37  0.170 / 0.190
G06     145.5          75.6               12.2 +/-    0.53      12.6 +/-    0.53  0.280 / 0.240
G12     311.0          20.1                8.9 +/-    1.33      19.5 +/-    1.33  0.100 / 0.070
G17     38.5           47.8                9.8 +/-    2.06      12.6 +/-    2.06  0.060 / 0.090
G19     13.2           61.4               10.2 +/-    0.52      11.5 +/-    0.52  0.030 / 0.040
G24     290.3          40.6               14.5 +/-    3.60      20.9 +/-    3.60  0.030 / 0.030
G28     109.0          26.2               11.6 +/-    1.27      22.0 +/-    1.27  0.290 / 0.160