PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/19-10:12:50
G01     98.1           29.5                6.9 +/-    1.03      12.2 +/-    1.03  0.030 / 0.040
G07     118.6          50.7                7.2 +/-    0.38       9.0 +/-    0.38  0.040 / 0.050
G08     41.6           11.4                3.0 +/-    2.73       8.2 +/-    2.73  0.070 / 0.100
G11     75.6           41.4                5.6 +/-    1.77       8.0 +/-    1.77  0.070 / 0.100
G13     301.7          33.7                2.0 +/-    1.94       3.3 +/-    1.94  0.030 / 0.020
G17     209.4          48.3                5.7 +/-    0.51       7.4 +/-    0.51  0.030 / 0.030
G18     69.6           24.2                5.6 +/-    1.22      11.1 +/-    1.22  0.050 / 0.110
G19     212.3          16.6                4.6 +/-    2.61      10.9 +/-    2.61  0.050 / 0.110
G28     333.1          61.7                4.2 +/-    0.79       4.7 +/-    0.79  0.080 / 0.140
G30     62.9           80.5                6.1 +/-    1.04       6.2 +/-    1.04  0.070 / 0.150