PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/09-04:27:50
G01     256.8          37.7                2.0 +/-    1.67       3.0 +/-    1.67  0.040 / 0.050
G03     316.4          36.7                0.9 +/-    1.16       1.3 +/-    1.16  0.040 / 0.050
G11     239.4          15.6                2.5 +/-    1.74       6.2 +/-    1.74  0.060 / 0.100
G14     56.4           42.5                1.5 +/-    0.48       2.1 +/-    0.48  0.050 / 0.090
G22     310.0          61.1                2.2 +/-    0.54       2.5 +/-    0.54  0.050 / 0.090
G23     282.2          14.9               -2.8 +/-    5.40      -7.1 +/-    5.40  0.060 / 0.110
G25     41.1           10.7                2.5 +/-    0.96       6.9 +/-    0.96  0.040 / 0.070
G26     143.7          32.5                2.8 +/-    0.72       4.7 +/-    0.72  0.040 / 0.060
G31     42.3           65.8               -0.3 +/-    0.46      -0.4 +/-    0.46  0.120 / 0.320
G32     71.9           28.1                1.1 +/-    0.37       1.9 +/-    0.37  0.120 / 0.370