PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/11-06:58:10
G03     207.3          49.4                8.3 +/-    0.51      10.6 +/-    0.51  0.030 / 0.040
G07     266.1          23.4                6.1 +/-    1.71      12.4 +/-    1.71  0.030 / 0.040
G09     316.1          39.4                3.8 +/-    0.44       5.6 +/-    0.44  0.240 / 0.130
G16     74.4           64.4                6.6 +/-    0.48       7.3 +/-    0.48  0.250 / 0.160
G22     185.4          32.1                6.1 +/-    1.52      10.3 +/-    1.52  0.060 / 0.080
G23     338.1          67.3                5.5 +/-    0.80       5.9 +/-    0.80  0.070 / 0.090
G26     48.1           38.2                5.3 +/-    0.97       7.9 +/-    0.97  0.030 / 0.040
G27     125.0          18.0                5.4 +/-    1.39      12.5 +/-    1.39  0.030 / 0.030