PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/19-23:58:10
G05     50.7           12.8                7.7 +/-    1.85      20.1 +/-    1.85  0.170 / 0.150
G10     239.4          16.1               14.3 +/-    1.65      34.7 +/-    1.65  0.050 / 0.170
G13     69.4           35.6               10.4 +/-    0.95      16.3 +/-    0.95  0.060 / 0.060
G15     120.3          55.1               11.9 +/-    0.40      14.2 +/-    0.40  0.050 / 0.050
G16     308.5          14.7                7.2 +/-    4.04      18.1 +/-    4.04  0.100 / 0.320
G20     247.6          25.0               14.5 +/-    1.93      28.4 +/-    1.93  0.120 / 0.340
G21     317.0          49.5               10.1 +/-    1.12      12.8 +/-    1.12  0.070 / 0.110
G26     280.8          20.2                9.8 +/-    1.48      21.4 +/-    1.48  0.050 / 0.100
G29     159.6          67.9               11.5 +/-    0.79      12.3 +/-    0.79  0.030 / 0.040