PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/14-04:42:40
G01     220.0          10.8                6.1 +/-    2.24      16.8 +/-    2.24  0.030 / 0.040
G03     263.0          69.6                6.1 +/-    0.93       6.5 +/-    0.93  0.030 / 0.040
G09     301.2          18.0                4.6 +/-    1.80      10.6 +/-    1.80  0.120 / 0.230
G14     94.1           19.3                4.8 +/-    1.93      10.7 +/-    1.93  0.100 / 0.200
G16     133.9          54.1                6.8 +/-    0.59       8.1 +/-    0.59  0.060 / 0.060
G22     202.8          62.6                6.1 +/-    0.72       6.8 +/-    0.72  0.040 / 0.070
G23     313.7          43.3                4.7 +/-    0.90       6.5 +/-    0.90  0.180 / 0.420
G26     78.8           53.4                5.6 +/-    0.58       6.7 +/-    0.58  0.290 / 0.360
G31     49.3           24.0                3.4 +/-    3.20       6.9 +/-    3.20  0.040 / 0.050