PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/17-17:42:40
G10     262.3          34.6               12.1 +/-    1.52      19.3 +/-    1.52  0.150 / 0.200
G13     44.8           22.8                9.0 +/-    2.53      18.6 +/-    2.53  0.150 / 0.220
G15     63.4           50.8                9.7 +/-    0.91      12.1 +/-    0.91  0.030 / 0.040
G16     288.9          12.0               12.0 +/-    1.58      32.0 +/-    1.58  0.030 / 0.040
G18     294.1          63.7               10.3 +/-    0.75      11.3 +/-    0.75  0.060 / 0.100
G20     50.6           39.6                8.7 +/-    1.51      12.7 +/-    1.51  0.050 / 0.090
G21     4.1            71.1               11.0 +/-    0.31      11.5 +/-    0.31  0.210 / 0.270
G24     125.0          11.3                2.3 +/-   36.82       6.2 +/-   36.82  0.290 / 0.330
G27     319.7          16.7               10.4 +/-    2.25      24.7 +/-    2.25  0.240 / 0.480
G29     165.0          30.4               12.3 +/-    0.96      21.4 +/-    0.96  0.190 / 0.400