PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/28-23:12:40
G01     41.0           16.4                8.4 +/-    2.54      20.2 +/-    2.54  0.270 / 0.340
G06     177.8          35.2               10.4 +/-    1.54      16.4 +/-    1.54  0.270 / 0.360
G13     237.2          22.7               10.9 +/-    2.83      22.6 +/-    2.83  0.040 / 0.050
G15     270.6          12.4                9.6 +/-    2.45      25.3 +/-    2.45  0.050 / 0.060
G17     4.6            70.0                8.0 +/-    0.41       8.5 +/-    0.41  0.030 / 0.030
G19     275.1          68.9                8.7 +/-    0.41       9.3 +/-    0.41  0.030 / 0.030
G24     316.0          20.3                6.0 +/-    2.53      13.0 +/-    2.53  0.150 / 0.220
G28     66.9           50.0                9.9 +/-    1.14      12.5 +/-    1.14  0.140 / 0.290
G30     154.2          27.2               10.3 +/-    1.38      19.2 +/-    1.38  0.060 / 0.120