PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/12-17:28:00
G01     267.8          40.4               12.1 +/-    1.51      17.4 +/-    1.51  0.030 / 0.030
G03     316.4          34.3                7.8 +/-    1.38      12.6 +/-    1.38  0.030 / 0.030
G10     131.1          15.4               11.3 +/-    1.62      27.9 +/-    1.62  0.050 / 0.050
G11     251.0          19.4               11.1 +/-    1.32      24.9 +/-    1.32  0.050 / 0.050
G14     44.6           49.7                9.2 +/-    0.41      11.6 +/-    0.41  0.100 / 0.230
G22     313.6          55.2                9.3 +/-    0.91      11.0 +/-    0.91  0.090 / 0.270
G25     50.8           16.4                7.3 +/-    0.97      17.6 +/-    0.97  0.050 / 0.080
G26     146.1          27.1               13.1 +/-    2.34      24.4 +/-    2.34  0.040 / 0.080
G31     50.4           71.2                9.5 +/-    0.39       9.9 +/-    0.39  0.080 / 0.090
G32     66.6           30.5                8.8 +/-    0.82      15.2 +/-    0.82  0.070 / 0.120