PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/24-20:42:30
G06     180.1          18.3               20.8 +/-    2.22      47.6 +/-    2.22  0.220 / 0.290
G07     143.7          11.0               18.5 +/-    2.17      50.6 +/-    2.17  0.150 / 0.290
G11     45.4           18.1                8.4 +/-    2.03      19.4 +/-    2.03  0.050 / 0.050
G13     254.5          33.4               14.8 +/-    2.04      24.2 +/-    2.04  0.030 / 0.050
G15     287.2          16.4               12.5 +/-    2.47      30.0 +/-    2.47  0.050 / 0.060
G17     290.4          79.4               13.0 +/-    0.43      13.2 +/-    0.43  0.060 / 0.060
G19     239.1          56.4               14.4 +/-    2.49      16.9 +/-    2.49  0.080 / 0.090
G28     38.5           57.1               10.3 +/-    0.68      12.0 +/-    0.68  0.090 / 0.070
G30     147.0          44.4               13.6 +/-    1.14      18.5 +/-    1.14  0.070 / 0.160