PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/23-20:58:00
G10     276.6          43.5               11.3 +/-    0.81      15.6 +/-    0.81  0.080 / 0.130
G13     38.7           11.5                7.7 +/-    2.71      20.9 +/-    2.71  0.080 / 0.160
G15     54.4           46.8                8.7 +/-    0.99      11.5 +/-    0.99  0.050 / 0.050
G20     314.9          63.4               10.9 +/-    0.86      12.0 +/-    0.86  0.040 / 0.040
G21     30.0           76.1               11.4 +/-    0.43      11.7 +/-    0.43  0.120 / 0.240
G24     110.5          19.1               12.6 +/-    1.25      28.4 +/-    1.25  0.110 / 0.230
G27     314.7          24.2                9.7 +/-    1.79      19.3 +/-    1.79  0.160 / 0.480
G29     168.6          23.0               12.6 +/-    1.92      25.8 +/-    1.92  0.150 / 0.520
G32     205.4          17.7               14.8 +/-    1.51      34.5 +/-    1.51  0.040 / 0.060