PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/23-05:57:50
G01     58.0           29.0                2.8 +/-    1.74       4.9 +/-    1.74  0.040 / 0.050
G06     179.0          15.1                4.6 +/-    2.25      11.5 +/-    2.25  0.040 / 0.030
G07     141.9          22.2                9.1 +/-    1.31      18.9 +/-    1.31  0.110 / 0.220
G11     49.2           27.3                2.7 +/-    2.00       5.0 +/-    2.00  0.220 / 0.260
G13     260.7          36.3                6.6 +/-    2.31      10.3 +/-    2.31  0.050 / 0.050
G15     291.3          17.2                4.4 +/-    2.71      10.3 +/-    2.71  0.050 / 0.050
G17     258.1          77.2                8.3 +/-    0.61       8.5 +/-    0.61  0.030 / 0.020
G19     232.0          53.3                7.8 +/-    2.19       9.5 +/-    2.19  0.030 / 0.020
G28     20.4           60.3                2.3 +/-    1.14       2.6 +/-    1.14  0.080 / 0.220
G30     144.9          56.2                9.5 +/-    1.27      11.2 +/-    1.27  0.100 / 0.180