PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/25-14:12:50
G01     59.2           29.8                7.6 +/-    1.47      13.3 +/-    1.47  0.040 / 0.040
G07     141.6          19.1                8.0 +/-    1.46      18.1 +/-    1.46  0.050 / 0.050
G11     48.0           24.4                7.3 +/-    1.62      14.4 +/-    1.62  0.160 / 0.250
G13     261.3          36.1               11.0 +/-    1.93      17.0 +/-    1.93  0.120 / 0.220
G15     293.9          16.3                7.7 +/-    2.54      18.5 +/-    2.54  0.030 / 0.040
G17     250.5          73.3               10.2 +/-    0.68      10.6 +/-    0.68  0.030 / 0.040
G18     41.6           12.3                5.8 +/-    2.15      15.3 +/-    2.15  0.100 / 0.070
G19     231.9          52.2               10.7 +/-    2.57      13.2 +/-    2.57  0.090 / 0.070
G28     24.7           59.5                8.7 +/-    0.69       9.9 +/-    0.69  0.210 / 0.260
G30     143.6          51.6                9.7 +/-    0.99      12.0 +/-    0.99  0.250 / 0.220