PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/10-14:27:40
G03     202.3          47.5                9.8 +/-    1.56      12.7 +/-    1.56  0.040 / 0.040
G07     264.6          20.7                7.9 +/-    1.49      17.0 +/-    1.49  0.030 / 0.030
G09     314.7          36.0                6.9 +/-    0.96      10.7 +/-    0.96  0.030 / 0.040
G16     68.7           60.9                8.3 +/-    0.39       9.3 +/-    0.39  0.030 / 0.050
G22     182.0          28.6                8.2 +/-    2.28      14.8 +/-    2.28  0.050 / 0.080
G23     351.3          72.2                7.2 +/-    0.38       7.5 +/-    0.38  0.050 / 0.080
G26     46.6           33.6                7.2 +/-    0.44      11.7 +/-    0.44  0.150 / 0.220
G27     126.5          17.3                8.4 +/-    1.61      19.8 +/-    1.61  0.090 / 0.270