PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/17-04:13:10
G01     95.1           30.4                4.9 +/-    0.66       8.4 +/-    0.66  0.050 / 0.050
G07     121.8          46.9                4.6 +/-    0.92       6.1 +/-    0.92  0.040 / 0.050
G11     71.7           40.5                3.8 +/-    0.87       5.5 +/-    0.87  0.080 / 0.130
G13     299.0          35.0                3.8 +/-    1.53       6.1 +/-    1.53  0.090 / 0.120
G17     210.4          52.1                6.3 +/-    1.04       7.8 +/-    1.04  0.060 / 0.170
G18     64.9           23.0                3.0 +/-    0.67       6.2 +/-    0.67  0.060 / 0.150
G19     212.7          21.2                4.2 +/-    1.56       8.9 +/-    1.56  0.070 / 0.120
G28     335.6          61.7                2.3 +/-    0.64       2.6 +/-    0.64  0.070 / 0.120
G30     80.1           79.8                4.2 +/-    0.40       4.3 +/-    0.40  0.030 / 0.040