PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/14-07:57:50
G07     326.4          55.6                4.9 +/-    0.49       5.8 +/-    0.49  0.070 / 0.110
G08     104.6          49.9                6.4 +/-    0.72       8.1 +/-    0.72  0.080 / 0.100
G09     182.7          75.2                6.0 +/-    0.38       6.2 +/-    0.38  0.040 / 0.060
G11     148.0          10.5                0.2 +/-   15.04       0.4 +/-   15.04  0.060 / 0.070
G16     45.5           9.8                 0.7 +/-    2.38       1.9 +/-    2.38  0.030 / 0.060
G23     154.0          48.1                6.3 +/-    1.02       8.1 +/-    1.02  0.030 / 0.070
G27     61.4           34.8                5.1 +/-    0.97       8.1 +/-    0.97  0.030 / 0.040
G28     233.1          24.5                6.1 +/-    2.51      12.1 +/-    2.51  0.030 / 0.040
G30     297.0          30.4                4.3 +/-    2.59       7.5 +/-    2.59  0.140 / 0.590