PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/16-12:57:50
G01     49.3           24.7                3.0 +/-   36.33       5.9 +/-   36.33  0.080 / 0.330
G06     178.3          25.3                3.8 +/-   12.70       7.3 +/-   12.70  0.080 / 0.260
G11     44.0           12.4                2.8 +/-   38.20       7.5 +/-   38.20  0.040 / 0.060
G13     251.9          29.8                4.6 +/-   39.25       8.1 +/-   39.25  0.040 / 0.060
G15     284.2          15.5                2.6 +/-   38.03       6.4 +/-   38.03  0.040 / 0.030
G17     332.6          78.1                2.9 +/-   39.10       3.0 +/-   39.10  0.020 / 0.030
G19     250.1          62.8                2.5 +/-   37.49       2.8 +/-   37.49  0.060 / 0.130
G28     54.5           52.2                1.8 +/-    2.80       2.2 +/-    2.80  0.060 / 0.110
G30     150.1          41.8                5.1 +/-   35.50       7.2 +/-   35.50  0.140 / 0.250