PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/07-07:27:50
G01     108.5          24.7                4.1 +/-    0.57       8.0 +/-    0.57  0.040 / 0.060
G07     105.0          58.2                5.1 +/-    0.42       5.9 +/-    0.42  0.040 / 0.060
G08     42.0           20.6                0.9 +/-    1.57       2.1 +/-    1.57  0.030 / 0.040
G09     175.0          14.8                8.5 +/-    1.30      21.3 +/-    1.30  0.030 / 0.050
G11     90.7           41.7                4.7 +/-    0.37       6.6 +/-    0.37  0.050 / 0.070
G13     311.9          26.2                3.2 +/-    1.40       6.1 +/-    1.40  0.050 / 0.100
G17     204.8          38.1                6.7 +/-    2.51      10.1 +/-    2.51  0.050 / 0.130
G19     208.5          12.9                3.8 +/-    1.25       9.8 +/-    1.25  0.060 / 0.130
G28     316.1          60.8                3.5 +/-    0.67       4.0 +/-    0.67  0.120 / 0.320
G30     18.0           77.0                4.3 +/-    0.61       4.4 +/-    0.61  0.120 / 0.280