PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/08-10:13:00
G01     87.0           32.3                5.2 +/-    0.55       8.7 +/-    0.55  0.040 / 0.060
G07     127.9          41.4                6.1 +/-    0.92       8.7 +/-    0.92  0.050 / 0.050
G11     65.1           37.1                4.1 +/-    0.43       6.3 +/-    0.43  0.210 / 0.470
G13     293.6          35.5                5.2 +/-    1.10       8.1 +/-    1.10  0.130 / 0.300
G15     314.2          10.8               -2.2 +/-   20.55      -6.0 +/-   20.55  0.050 / 0.070
G17     216.4          58.6                9.0 +/-    0.60      10.3 +/-    0.60  0.050 / 0.070
G19     215.7          31.1                6.8 +/-    1.42      11.7 +/-    1.42  0.090 / 0.090
G28     355.3          61.4                4.2 +/-    0.91       4.8 +/-    0.91  0.100 / 0.090
G30     109.5          74.8                5.7 +/-    0.87       5.9 +/-    0.87  0.040 / 0.040