PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/11-05:43:00
G01     91.7           31.4                3.8 +/-    0.75       6.4 +/-    0.75  0.030 / 0.050
G07     124.3          46.1                5.4 +/-    0.59       7.2 +/-    0.59  0.040 / 0.040
G11     71.0           40.1                3.8 +/-    0.88       5.5 +/-    0.88  0.050 / 0.040
G13     297.4          34.6                4.1 +/-    4.58       6.5 +/-    4.58  0.040 / 0.040
G17     213.5          53.3                7.8 +/-    0.87       9.4 +/-    0.87  0.090 / 0.080
G19     213.9          27.1                7.8 +/-    1.85      14.5 +/-    1.85  0.090 / 0.090
G28     348.1          61.7                3.0 +/-    0.41       3.3 +/-    0.41  0.030 / 0.040
G30     101.5          75.4                4.7 +/-    0.28       4.9 +/-    0.28  0.040 / 0.040