PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/21-05:58:00
G01     62.0           30.3                5.5 +/-    1.05       9.6 +/-    1.05  0.030 / 0.030
G06     180.0          11.8                1.7 +/-   23.93       4.7 +/-   23.93  0.030 / 0.030
G07     140.1          25.7                6.5 +/-    2.69      12.4 +/-    2.69  0.110 / 0.200
G11     51.2           30.1                5.5 +/-    0.68       9.5 +/-    0.68  0.120 / 0.200
G13     265.4          37.5                7.9 +/-    2.16      12.0 +/-    2.16  0.050 / 0.050
G15     294.9          17.0                4.8 +/-    2.04      11.3 +/-    2.04  0.050 / 0.050
G17     244.8          74.4                8.8 +/-    0.42       9.1 +/-    0.42  0.030 / 0.030
G19     228.1          49.8                8.4 +/-    2.53      10.6 +/-    2.53  0.030 / 0.030
G28     13.3           60.8                7.2 +/-    2.37       8.1 +/-    2.37  0.060 / 0.130
G30     141.9          60.0                8.5 +/-    0.42       9.7 +/-    0.42  0.070 / 0.160