PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/11-06:12:40
G01     74.9           33.2                3.7 +/-    0.68       6.0 +/-    0.68  0.030 / 0.050
G07     135.3          33.6                7.0 +/-    1.63      11.4 +/-    1.63  0.030 / 0.050
G11     56.8           33.0                2.4 +/-    0.51       3.9 +/-    0.51  0.050 / 0.070
G13     280.5          37.2                6.2 +/-    0.92       9.5 +/-    0.92  0.040 / 0.080
G15     305.2          14.9                2.0 +/-    2.32       5.1 +/-    2.32  0.030 / 0.040
G17     228.3          67.0                6.0 +/-    1.15       6.4 +/-    1.15  0.030 / 0.040
G19     221.8          40.1                8.3 +/-    0.91      12.1 +/-    0.91  0.090 / 0.340
G28     14.7           59.8                3.0 +/-    0.72       3.4 +/-    0.72  0.100 / 0.290
G30     131.0          63.6                5.0 +/-    0.94       5.5 +/-    0.94  0.050 / 0.090