PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/20-15:12:50
G05     47.4           21.9                4.9 +/-    0.73      10.4 +/-    0.73  0.220 / 0.400
G10     234.1          10.5              -10.9 +/-   34.57     -30.0 +/-   34.57  0.240 / 0.410
G13     79.6           36.1                7.8 +/-    0.51      12.1 +/-    0.51  0.030 / 0.060
G15     132.4          49.8                8.9 +/-    0.66      11.3 +/-    0.66  0.030 / 0.030
G16     317.4          10.8               -1.9 +/-   13.79      -5.2 +/-   13.79  0.160 / 0.480
G20     245.3          34.5                9.7 +/-    0.77      15.6 +/-    0.77  0.130 / 0.350
G21     312.1          46.6                6.7 +/-    1.28       8.8 +/-    1.28  0.050 / 0.140
G25     197.1          11.1                8.9 +/-    5.99      24.3 +/-    5.99  0.060 / 0.140
G26     292.4          19.8                7.1 +/-    1.95      15.6 +/-    1.95  0.040 / 0.070
G29     150.3          75.2                8.6 +/-    0.74       8.9 +/-    0.74  0.040 / 0.070