PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/12-05:42:40
G01     89.5           31.9                6.5 +/-    0.85      10.9 +/-    0.85  0.050 / 0.050
G07     126.1          44.4                8.6 +/-    1.30      11.7 +/-    1.30  0.040 / 0.050
G11     68.8           39.4                5.6 +/-    0.68       8.2 +/-    0.68  0.040 / 0.050
G13     295.3          35.3                4.8 +/-    1.27       7.6 +/-    1.27  0.040 / 0.060
G15     314.7          10.7               -6.1 +/-   15.96     -16.7 +/-   15.96  0.140 / 0.390
G17     215.0          55.2                8.1 +/-    1.43       9.6 +/-    1.43  0.100 / 0.400
G19     214.8          28.8                6.0 +/-    3.34      10.9 +/-    3.34  0.050 / 0.040
G28     351.9          61.6                3.0 +/-    0.90       3.3 +/-    0.90  0.040 / 0.050
G30     107.6          74.0                6.4 +/-    0.67       6.7 +/-    0.67  0.100 / 0.100