PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/19-05:57:50
G01     66.2           31.3                3.4 +/-    0.62       5.9 +/-    0.62  0.030 / 0.030
G07     138.1          29.1                7.4 +/-    2.30      13.2 +/-    2.30  0.030 / 0.030
G11     53.6           32.8                2.7 +/-    1.58       4.4 +/-    1.58  0.140 / 0.300
G13     270.3          38.4                5.7 +/-    2.91       8.5 +/-    2.91  0.170 / 0.250
G15     298.6          16.6                2.9 +/-    2.41       6.9 +/-    2.41  0.050 / 0.050
G17     235.2          71.2                6.5 +/-    0.56       6.8 +/-    0.56  0.050 / 0.050
G19     224.6          46.3                6.5 +/-    2.36       8.6 +/-    2.36  0.040 / 0.030
G28     6.0            61.2                3.9 +/-    0.94       4.4 +/-    0.94  0.030 / 0.030
G30     138.3          63.8                6.6 +/-    0.32       7.3 +/-    0.32  0.080 / 0.130