PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/06-06:12:40
G01     219.9          10.8                5.1 +/-    1.83      14.1 +/-    1.83  0.060 / 0.060
G03     266.4          68.8                5.0 +/-    1.21       5.3 +/-    1.21  0.060 / 0.060
G09     300.5          16.1                3.8 +/-    2.74       9.2 +/-    2.74  0.160 / 0.330
G14     95.1           17.1                4.1 +/-    2.73       9.8 +/-    2.73  0.210 / 0.250
G16     141.5          52.8                9.0 +/-    0.44      11.0 +/-    0.44  0.030 / 0.040
G22     201.4          63.0                6.1 +/-    0.61       6.7 +/-    0.61  0.040 / 0.030
G23     312.9          42.3                5.2 +/-    0.73       7.4 +/-    0.73  0.050 / 0.050
G26     85.1           55.7                7.4 +/-    0.91       8.8 +/-    0.91  0.050 / 0.040
G31     48.3           26.5                2.6 +/-    2.01       5.0 +/-    2.01  0.110 / 0.150