PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/28-08:42:50
G01     60.1           30.6                3.7 +/-    0.99       6.4 +/-    0.99  0.040 / 0.040
G07     142.1          21.1                5.1 +/-    1.09      11.0 +/-    1.09  0.030 / 0.050
G11     47.5           22.5                2.5 +/-    1.43       5.3 +/-    1.43  0.040 / 0.120
G13     262.1          35.5                5.9 +/-    1.37       9.3 +/-    1.37  0.070 / 0.120
G15     297.0          15.0                2.2 +/-    2.32       5.5 +/-    2.32  0.050 / 0.090
G17     265.7          78.6                5.3 +/-    0.79       5.4 +/-    0.79  0.050 / 0.090
G18     41.0           11.3                2.6 +/-    1.90       7.0 +/-    1.90  0.080 / 0.130
G19     231.7          47.1                3.9 +/-    0.88       5.1 +/-    0.88  0.060 / 0.110
G28     33.3           57.4                3.5 +/-    0.56       4.0 +/-    0.56  0.140 / 0.420
G30     144.1          54.2                7.0 +/-    1.26       8.4 +/-    1.26  0.130 / 0.490