PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/31-14:27:50
G02     29.1           59.3                8.9 +/-    0.46      10.2 +/-    0.46  0.040 / 0.040
G05     151.0          56.2               12.1 +/-    0.57      14.3 +/-    0.57  0.030 / 0.040
G06     50.3           22.6                5.6 +/-    0.79      11.6 +/-    0.79  0.140 / 0.280
G12     213.4          73.8                9.2 +/-    0.67       9.5 +/-    0.67  0.100 / 0.240
G19     96.6           11.7                9.0 +/-    1.39      24.2 +/-    1.39  0.030 / 0.030
G20     198.3          20.3               11.6 +/-    3.72      25.3 +/-    3.72  0.020 / 0.030
G25     302.8          51.1                8.9 +/-    0.88      11.0 +/-    0.88  0.070 / 0.130
G29     306.6          29.5                9.0 +/-    1.94      16.0 +/-    1.94  0.060 / 0.130