PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/05-06:58:00
G03     220.3          60.2                8.4 +/-    1.18       9.5 +/-    1.18  0.050 / 0.070
G07     256.7          16.5                6.9 +/-    2.81      16.6 +/-    2.81  0.040 / 0.070
G09     310.8          30.0                3.9 +/-    1.48       6.8 +/-    1.48  0.090 / 0.310
G16     105.5          65.5               10.0 +/-    0.68      10.8 +/-    0.68  0.090 / 0.260
G22     189.0          43.8                8.6 +/-    1.28      11.8 +/-    1.28  0.060 / 0.100
G23     327.1          57.1                4.9 +/-    0.73       5.7 +/-    0.73  0.060 / 0.110
G26     56.8           47.1                6.9 +/-    0.53       9.0 +/-    0.53  0.080 / 0.150
G27     133.8          10.3               -8.7 +/-   32.10     -24.1 +/-   32.10  0.130 / 0.170
G31     57.9           12.8                2.6 +/-    1.17       6.9 +/-    1.17  0.030 / 0.040