PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/22-08:42:50
G01     43.5           19.3                4.5 +/-    3.03      10.1 +/-    3.03  0.040 / 0.060
G06     178.9          31.7                8.1 +/-    0.86      13.7 +/-    0.86  0.050 / 0.050
G13     242.8          24.8                7.7 +/-    1.77      15.1 +/-    1.77  0.120 / 0.200
G15     274.5          13.8                4.3 +/-    1.01      11.0 +/-    1.01  0.340 / 0.310
G17     356.8          72.7                7.2 +/-    0.66       7.5 +/-    0.66  0.130 / 0.190
G19     269.0          68.2                7.0 +/-    0.66       7.5 +/-    0.66  0.120 / 0.180
G24     318.2          14.6                2.4 +/-    3.16       6.0 +/-    3.16  0.020 / 0.020
G28     66.9           48.3                6.6 +/-    2.32       8.5 +/-    2.32  0.030 / 0.020
G30     153.0          31.1               10.3 +/-    1.80      17.6 +/-    1.80  0.080 / 0.100