PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/08-07:12:40
G01     113.2          21.9                9.1 +/-    1.42      19.2 +/-    1.42  0.040 / 0.050
G07     96.3           61.7                9.2 +/-    0.43      10.3 +/-    0.43  0.040 / 0.050
G08     42.8           24.9                5.4 +/-    1.78      10.6 +/-    1.78  0.070 / 0.090
G09     175.8          19.5                7.7 +/-    1.68      17.2 +/-    1.68  0.050 / 0.090
G11     97.6           41.0                9.3 +/-    0.66      13.4 +/-    0.66  0.050 / 0.110
G13     315.1          22.8                4.4 +/-    1.79       9.1 +/-    1.79  0.050 / 0.110
G17     203.0          33.0                9.5 +/-    2.23      15.7 +/-    2.23  0.030 / 0.040
G28     306.3          59.7                9.1 +/-    0.74      10.4 +/-    0.74  0.030 / 0.040
G30     1.8            73.7                9.0 +/-    0.64       9.4 +/-    0.64  0.110 / 0.170