PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/11-12:42:50
G01     260.2          39.6                7.6 +/-    2.69      11.2 +/-    2.69  0.050 / 0.060
G03     317.1          41.0                4.4 +/-    0.62       6.3 +/-    0.62  0.060 / 0.100
G10     133.4          9.9                 6.8 +/-    1.87      19.0 +/-    1.87  0.070 / 0.080
G11     243.0          15.8                6.6 +/-    0.98      16.0 +/-    0.98  0.050 / 0.100
G14     52.0           45.1                6.2 +/-    0.94       8.3 +/-    0.94  0.210 / 0.260
G18     224.5          33.1                8.2 +/-    1.15      13.5 +/-    1.15  0.190 / 0.290
G22     310.7          64.2                6.5 +/-    0.73       7.2 +/-    0.73  0.080 / 0.070
G25     45.5           13.3                4.0 +/-    3.33      10.3 +/-    3.33  0.070 / 0.070
G31     46.0           68.0                5.7 +/-    0.39       6.1 +/-    0.39  0.050 / 0.030
G32     67.1           32.7                4.5 +/-    4.27       7.5 +/-    4.27  0.040 / 0.040