PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/06-06:12:40
G01     86.4           32.5                2.9 +/-    0.98       4.8 +/-    0.98  0.040 / 0.040
G07     128.3          42.1                7.4 +/-    0.69      10.4 +/-    0.69  0.040 / 0.050
G11     65.7           38.2                4.3 +/-    0.70       6.5 +/-    0.70  0.040 / 0.040
G13     292.4          36.0                6.0 +/-    1.41       9.3 +/-    1.41  0.040 / 0.040
G15     312.9          11.7                3.0 +/-    3.73       8.1 +/-    3.73  0.160 / 0.260
G17     217.1          58.0                7.2 +/-    0.72       8.3 +/-    0.72  0.190 / 0.350
G19     216.1          31.3                4.4 +/-    2.20       7.6 +/-    2.20  0.040 / 0.050
G28     356.8          61.3                4.5 +/-    0.67       5.1 +/-    0.67  0.050 / 0.050
G30     114.1          72.3                7.5 +/-    1.04       7.9 +/-    1.04  0.090 / 0.090