PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/19-01:58:00
G01     122.6          13.0                7.7 +/-    1.95      20.0 +/-    1.95  0.030 / 0.030
G07     58.9           69.4                6.4 +/-    0.68       6.8 +/-    0.68  0.030 / 0.030
G08     48.2           36.2                5.5 +/-    0.87       8.6 +/-    0.87  0.070 / 0.050
G09     173.8          29.2                8.8 +/-    0.79      15.6 +/-    0.79  0.050 / 0.080
G11     121.0          37.6                8.7 +/-    0.77      13.2 +/-    0.77  0.110 / 0.090
G13     319.9          15.0                2.9 +/-    2.52       7.1 +/-    2.52  0.090 / 0.100
G17     199.1          17.8                5.9 +/-    1.51      13.6 +/-    1.51  0.060 / 0.100
G28     270.2          46.9                6.6 +/-    2.38       8.7 +/-    2.38  0.080 / 0.120
G30     329.5          59.2                5.1 +/-    0.49       5.8 +/-    0.49  0.230 / 0.420