PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/29-20:42:50
G01     46.1           22.2                9.8 +/-    2.57      20.5 +/-    2.57  0.070 / 0.110
G06     178.1          27.6               19.6 +/-    3.10      36.2 +/-    3.10  0.100 / 0.090
G11     43.5           10.4                9.6 +/-    2.62      26.6 +/-    2.62  0.420 / 0.450
G13     244.8          28.2               17.8 +/-    2.14      32.4 +/-    2.14  0.130 / 0.240
G15     278.3          14.9               12.4 +/-    1.77      30.9 +/-    1.77  0.040 / 0.050
G17     338.0          76.8               15.7 +/-    0.38      16.0 +/-    0.38  0.040 / 0.050
G19     254.6          64.0               17.3 +/-    0.98      19.1 +/-    0.98  0.160 / 0.150
G24     318.3          12.6                8.5 +/-    1.60      22.4 +/-    1.60  0.110 / 0.130
G28     53.4           54.0               12.7 +/-    0.94      15.3 +/-    0.94  0.100 / 0.170
G30     151.2          34.7               16.7 +/-    1.69      26.7 +/-    1.69  0.090 / 0.170