PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/18-06:57:50
G01     70.0           32.8                4.3 +/-    0.68       7.2 +/-    0.68  0.030 / 0.030
G07     137.7          28.7                6.7 +/-    0.98      12.1 +/-    0.98  0.030 / 0.030
G11     52.1           29.0                3.8 +/-    1.12       6.8 +/-    1.12  0.040 / 0.060
G13     273.1          37.8                6.0 +/-    1.08       9.0 +/-    1.08  0.040 / 0.060
G15     304.1          14.1                1.4 +/-    1.27       3.6 +/-    1.27  0.060 / 0.100
G17     235.8          72.5                6.6 +/-    0.98       6.9 +/-    0.98  0.070 / 0.120
G19     224.2          39.7                6.1 +/-    1.70       8.8 +/-    1.70  0.060 / 0.100
G28     17.4           59.8                3.9 +/-    0.54       4.5 +/-    0.54  0.060 / 0.120
G30     136.4          63.0                7.3 +/-    1.42       8.1 +/-    1.42  0.030 / 0.030