PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/25-14:42:50
G01     108.2          24.0               11.1 +/-    1.12      22.1 +/-    1.12  0.030 / 0.060
G07     106.6          55.3               10.7 +/-    0.54      12.8 +/-    0.54  0.040 / 0.060
G08     42.3           23.8                7.6 +/-    1.38      15.2 +/-    1.38  0.040 / 0.070
G09     175.8          16.8                9.2 +/-    1.53      22.0 +/-    1.53  0.040 / 0.070
G11     91.2           43.4                9.2 +/-    0.67      12.7 +/-    0.67  0.030 / 0.030
G13     310.7          28.3                7.2 +/-    1.83      13.1 +/-    1.83  0.030 / 0.050
G17     204.7          33.6               11.4 +/-    1.25      18.5 +/-    1.25  0.080 / 0.130
G18     81.4           23.7                8.5 +/-    1.23      17.0 +/-    1.23  0.090 / 0.090
G28     303.0          57.9                7.8 +/-    1.00       9.1 +/-    1.00  0.080 / 0.190
G30     26.1           77.7                8.9 +/-    0.99       9.1 +/-    0.99  0.070 / 0.130