PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/19-11:13:00
G01     126.4          12.1                3.2 +/-    4.57       8.4 +/-    4.57  0.030 / 0.040
G07     55.6           69.3                3.2 +/-    0.58       3.4 +/-    0.58  0.030 / 0.040
G08     48.9           37.0                1.2 +/-    0.96       1.9 +/-    0.96  0.030 / 0.030
G09     176.1          32.9                4.8 +/-    1.70       7.9 +/-    1.70  0.030 / 0.030
G11     115.8          35.9                5.0 +/-    1.12       7.9 +/-    1.12  0.100 / 0.350
G13     320.8          12.6                1.0 +/-    2.45       2.6 +/-    2.45  0.100 / 0.370
G17     199.4          17.0                4.2 +/-    1.04      10.0 +/-    1.04  0.120 / 0.340
G18     102.4          17.0                3.4 +/-    1.47       8.1 +/-    1.47  0.080 / 0.330
G28     277.1          53.1                4.0 +/-    1.04       4.9 +/-    1.04  0.120 / 0.320
G30     331.6          59.8                2.5 +/-    0.97       2.9 +/-    0.97  0.120 / 0.380