PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/21-06:58:10
G01     39.8           14.7                2.9 +/-    2.77       7.3 +/-    2.77  0.070 / 0.100
G06     173.6          39.1                7.7 +/-    1.10      11.4 +/-    1.10  0.080 / 0.090
G13     236.2          22.8                6.7 +/-    2.12      13.7 +/-    2.12  0.200 / 0.350
G15     268.6          12.4                4.8 +/-    1.58      12.6 +/-    1.58  0.210 / 0.350
G17     2.4            70.7                7.1 +/-    0.41       7.5 +/-    0.41  0.040 / 0.050
G19     280.4          71.0                6.7 +/-    0.57       7.0 +/-    0.57  0.040 / 0.060
G24     316.8          17.7                3.5 +/-    2.73       8.1 +/-    2.73  0.040 / 0.020
G28     61.8           53.1                7.1 +/-    0.96       8.6 +/-    0.96  0.030 / 0.030
G30     155.8          31.2                8.3 +/-    1.25      14.2 +/-    1.25  0.040 / 0.040