PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/18-01:58:10
G01     252.3          37.6                6.8 +/-    1.03      10.3 +/-    1.03  0.040 / 0.060
G03     316.7          39.8                4.1 +/-    1.50       5.9 +/-    1.50  0.040 / 0.050
G11     241.5          13.0                7.9 +/-    1.12      20.7 +/-    1.12  0.060 / 0.090
G14     54.3           44.8                3.7 +/-    0.57       5.0 +/-    0.57  0.060 / 0.090
G18     222.3          29.6                7.2 +/-    0.98      12.7 +/-    0.98  0.040 / 0.090
G22     308.5          61.5                5.9 +/-    0.91       6.6 +/-    0.91  0.040 / 0.070
G25     43.2           12.2                3.6 +/-    1.69       9.5 +/-    1.69  0.130 / 0.210
G26     138.7          35.6                9.5 +/-    0.77      14.9 +/-    0.77  0.140 / 0.210
G31     43.0           60.1                4.7 +/-    0.41       5.3 +/-    0.41  0.080 / 0.150
G32     74.4           24.5                5.7 +/-    0.73      11.2 +/-    0.73  0.090 / 0.160