PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/09-05:42:40
G01     96.0           30.2                6.6 +/-    0.90      11.5 +/-    0.90  0.040 / 0.040
G07     120.4          49.3                6.9 +/-    0.37       8.8 +/-    0.37  0.040 / 0.040
G08     42.0           11.4                2.6 +/-    1.85       7.1 +/-    1.85  0.170 / 0.180
G11     75.6           41.2                4.9 +/-    1.55       6.9 +/-    1.55  0.260 / 0.260
G13     301.4          33.1                2.5 +/-    0.98       4.1 +/-    0.98  0.040 / 0.040
G17     211.0          49.5                6.8 +/-    0.59       8.6 +/-    0.59  0.030 / 0.040
G19     212.3          23.6                5.6 +/-    1.90      11.4 +/-    1.90  0.060 / 0.080
G28     340.4          61.8                3.5 +/-    0.55       3.9 +/-    0.55  0.050 / 0.080
G30     85.9           77.7                4.9 +/-    0.32       5.0 +/-    0.32  0.030 / 0.030