PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/17-09:28:10
G07     312.0          49.0                4.0 +/-    0.79       5.1 +/-    0.79  0.140 / 0.170
G08     120.1          44.1                6.1 +/-    0.67       8.3 +/-    0.67  0.090 / 0.130
G09     261.6          84.3                4.2 +/-    0.42       4.2 +/-    0.42  0.030 / 0.050
G16     42.8           17.8                1.5 +/-    3.55       3.5 +/-    3.55  0.050 / 0.040
G23     148.0          59.6                5.6 +/-    0.38       6.4 +/-    0.38  0.050 / 0.050
G27     74.0           37.1                4.1 +/-    1.81       6.3 +/-    1.81  0.040 / 0.050
G28     226.3          15.9                3.3 +/-    7.64       8.1 +/-    7.64  0.040 / 0.040
G30     288.5          23.3                5.2 +/-    2.03      10.5 +/-    2.03  0.030 / 0.030