PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/03-08:27:50
G01     90.2           30.7                4.9 +/-    0.55       8.5 +/-    0.55  0.030 / 0.030
G07     123.9          45.6                6.7 +/-    1.59       8.9 +/-    1.59  0.030 / 0.040
G08     42.2           10.5                3.2 +/-    2.05       9.0 +/-    2.05  0.040 / 0.060
G11     71.9           42.5                4.6 +/-    0.60       6.4 +/-    0.60  0.040 / 0.060
G13     295.5          36.8                4.5 +/-    0.76       6.9 +/-    0.76  0.060 / 0.210
G17     212.2          50.2                7.0 +/-    1.04       8.8 +/-    1.04  0.060 / 0.170
G18     64.8           24.1                4.0 +/-    0.84       7.9 +/-    0.84  0.070 / 0.120
G19     212.7          27.5                3.7 +/-    1.70       6.9 +/-    1.70  0.070 / 0.090
G28     329.3          60.8                3.6 +/-    1.22       4.1 +/-    1.22  0.080 / 0.140
G30     91.5           79.4                4.0 +/-    0.58       4.0 +/-    0.58  0.090 / 0.110