PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/27-14:27:50
G01     302.9          36.4                5.9 +/-    2.88       9.2 +/-    2.88  0.070 / 0.090
G10     110.6          35.7                6.7 +/-    0.59      10.5 +/-    0.59  0.060 / 0.080
G11     275.1          27.9                6.4 +/-    1.82      11.6 +/-    1.82  0.050 / 0.030
G14     8.5            64.3                5.4 +/-    0.52       5.9 +/-    0.52  0.040 / 0.030
G18     264.3          51.3               10.2 +/-    4.87      12.6 +/-    4.87  0.040 / 0.040
G20     123.3          10.4                7.1 +/-    1.80      19.6 +/-    1.80  0.040 / 0.050
G22     312.0          31.9                6.3 +/-    2.46      10.6 +/-    2.46  0.060 / 0.060
G25     75.2           16.8                4.6 +/-    1.91      10.9 +/-    1.91  0.060 / 0.070
G31     167.9          67.6                7.3 +/-    0.55       7.8 +/-    0.55  0.050 / 0.070
G32     37.0           52.2                5.8 +/-    0.70       7.1 +/-    0.70  0.050 / 0.060