PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/23-15:12:40
G01     40.8           16.1                7.9 +/-    2.62      19.2 +/-    2.62  0.150 / 0.210
G06     174.2          38.2               10.0 +/-    0.98      14.9 +/-    0.98  0.190 / 0.190
G13     237.1          23.1               10.0 +/-    1.24      20.5 +/-    1.24  0.040 / 0.030
G15     271.5          12.4                7.8 +/-    2.44      20.5 +/-    2.44  0.040 / 0.030
G17     349.9          73.0                9.0 +/-    0.42       9.4 +/-    0.42  0.060 / 0.060
G19     276.8          70.0                9.0 +/-    0.55       9.5 +/-    0.55  0.070 / 0.050
G24     316.8          18.0                7.1 +/-    2.97      16.4 +/-    2.97  0.040 / 0.050
G28     63.8           51.7                8.4 +/-    0.53      10.4 +/-    0.53  0.030 / 0.040
G30     154.1          27.5                9.9 +/-    1.23      18.2 +/-    1.23  0.310 / 0.380