PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/18-10:42:50
G01     52.0           26.4                3.7 +/-    1.95       7.0 +/-    1.95  0.150 / 0.410
G06     177.2          21.8                6.1 +/-    5.67      12.8 +/-    5.67  0.130 / 0.370
G07     144.4          14.4                5.0 +/-    3.07      12.7 +/-    3.07  0.030 / 0.030
G11     45.8           19.9                3.2 +/-    2.76       7.0 +/-    2.76  0.030 / 0.030
G13     253.0          33.2                5.4 +/-    1.86       8.9 +/-    1.86  0.070 / 0.090
G15     287.7          15.9                4.8 +/-    1.94      11.7 +/-    1.94  0.050 / 0.070
G17     281.7          78.1                5.2 +/-    0.54       5.3 +/-    0.54  0.100 / 0.210
G19     240.7          58.9                5.7 +/-    2.50       6.6 +/-    2.50  0.180 / 0.240
G28     35.2           58.3                4.3 +/-    2.22       5.0 +/-    2.22  0.040 / 0.050
G30     148.4          47.0                6.1 +/-    1.18       8.0 +/-    1.18  0.040 / 0.050