PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/28-13:43:00
G01     63.5           31.4                3.9 +/-   12.73       6.7 +/-   12.73  0.030 / 0.040
G06     181.3          11.9                7.3 +/-   15.76      19.5 +/-   15.76  0.030 / 0.040
G07     140.5          22.7                9.2 +/-   10.88      19.0 +/-   10.88  0.050 / 0.180
G11     49.2           23.9                3.5 +/-    6.52       7.0 +/-    6.52  0.060 / 0.130
G13     269.2          35.8                6.5 +/-    7.82      10.2 +/-    7.82  0.060 / 0.150
G15     299.1          15.5                4.9 +/-    3.41      12.0 +/-    3.41  0.060 / 0.140
G17     252.9          76.7                4.5 +/-    6.51       4.6 +/-    6.51  0.070 / 0.100
G19     229.8          49.8                7.4 +/-    4.53       9.3 +/-    4.53  0.060 / 0.090
G28     30.7           57.5                3.4 +/-    5.45       3.9 +/-    5.45  0.030 / 0.040
G30     140.7          57.6                4.4 +/-   10.49       5.1 +/-   10.49  0.020 / 0.030