PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/17-08:27:40
G01     56.0           28.8                3.5 +/-    1.07       6.4 +/-    1.07  0.040 / 0.060
G06     181.6          16.1                8.1 +/-    3.43      19.5 +/-    3.43  0.040 / 0.060
G07     143.9          17.6                7.1 +/-    1.83      16.5 +/-    1.83  0.080 / 0.180
G11     46.6           19.9                4.0 +/-    1.26       8.8 +/-    1.26  0.060 / 0.160
G13     259.6          33.4                5.5 +/-    1.32       9.0 +/-    1.32  0.100 / 0.240
G15     289.9          16.6                3.2 +/-    1.95       7.5 +/-    1.95  0.080 / 0.260
G17     285.7          79.3                7.1 +/-    0.38       7.2 +/-    0.38  0.030 / 0.030
G19     238.2          56.0                8.1 +/-    1.16       9.5 +/-    1.16  0.020 / 0.030
G28     43.4           54.9                4.6 +/-    0.55       5.5 +/-    0.55  0.200 / 0.250
G30     145.8          47.6               10.4 +/-    0.84      13.5 +/-    0.84  0.210 / 0.140