PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/21-02:43:00
G10     285.7          48.3               10.3 +/-    1.02      13.3 +/-    1.02  0.040 / 0.030
G15     48.2           35.2                8.2 +/-    1.00      13.0 +/-    1.00  0.040 / 0.040
G20     330.2          64.7                9.4 +/-    1.15      10.3 +/-    1.15  0.080 / 0.050
G21     58.1           77.1                9.2 +/-    0.77       9.4 +/-    0.77  0.090 / 0.040
G24     107.2          22.5               10.7 +/-    0.60      22.1 +/-    0.60  0.070 / 0.040
G27     310.0          28.8                7.7 +/-    1.06      13.8 +/-    1.06  0.050 / 0.030
G29     167.3          14.7               12.9 +/-    2.26      32.2 +/-    2.26  0.050 / 0.030
G32     207.6          21.0               15.3 +/-    1.25      32.8 +/-    1.25  0.050 / 0.030