PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/14-06:12:40
G01     68.1           32.5                3.5 +/-    0.80       5.8 +/-    0.80  0.030 / 0.040
G07     138.7          28.4                5.9 +/-    0.97      10.7 +/-    0.97  0.040 / 0.050
G11     52.7           29.3                3.2 +/-    1.09       5.7 +/-    1.09  0.050 / 0.100
G13     273.2          36.7                6.5 +/-    1.72      10.0 +/-    1.72  0.040 / 0.120
G15     300.1          16.1                2.7 +/-    1.45       6.6 +/-    1.45  0.100 / 0.250
G17     239.1          72.0                5.4 +/-    0.79       5.7 +/-    0.79  0.110 / 0.270
G19     226.2          45.4                5.6 +/-    1.56       7.5 +/-    1.56  0.030 / 0.040
G28     24.8           58.4                3.7 +/-    0.30       4.2 +/-    0.30  0.020 / 0.040
G30     137.2          57.9                6.3 +/-    0.49       7.3 +/-    0.49  0.040 / 0.070