PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-13:57:50
G03     204.3          50.2                8.5 +/-    0.91      10.7 +/-    0.91  0.070 / 0.120
G07     262.6          19.3                7.8 +/-    1.31      17.5 +/-    1.31  0.060 / 0.120
G09     313.7          34.1                6.1 +/-    2.39       9.8 +/-    2.39  0.040 / 0.040
G16     73.8           62.0                7.2 +/-    0.37       8.0 +/-    0.37  0.040 / 0.050
G22     182.9          31.3                9.7 +/-    1.51      16.6 +/-    1.51  0.090 / 0.110
G23     346.0          69.8                6.4 +/-    0.79       6.8 +/-    0.79  0.080 / 0.110
G26     47.7           35.6                6.3 +/-    0.95       9.8 +/-    0.95  0.040 / 0.080
G27     128.5          15.6               11.7 +/-    1.84      28.7 +/-    1.84  0.040 / 0.080