PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/15-04:28:00
G07     3.8            66.2                3.5 +/-    0.67       3.7 +/-    0.67  0.030 / 0.030
G08     69.8           49.3                4.4 +/-    1.31       5.6 +/-    1.31  0.030 / 0.030
G09     176.8          53.8                5.8 +/-    0.45       7.0 +/-    0.45  0.070 / 0.060
G11     133.8          23.7                7.1 +/-    3.19      14.4 +/-    3.19  0.060 / 0.070
G23     160.1          28.2                6.2 +/-    1.56      11.2 +/-    1.56  0.200 / 0.170
G27     44.8           24.0                3.6 +/-    1.37       7.1 +/-    1.37  0.130 / 0.090
G28     250.1          39.3                6.1 +/-    0.96       9.0 +/-    0.96  0.040 / 0.030
G30     313.0          44.1                3.8 +/-    1.10       5.1 +/-    1.10  0.040 / 0.030