PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/14-14:58:10
G01     54.7           28.0                7.1 +/-    2.21      13.0 +/-    2.21  0.080 / 0.180
G06     179.0          19.9               11.4 +/-    1.83      25.2 +/-    1.83  0.090 / 0.230
G07     144.0          14.6               10.1 +/-    3.53      25.5 +/-    3.53  0.080 / 0.120
G11     45.5           16.9                6.4 +/-    2.53      15.2 +/-    2.53  0.070 / 0.140
G13     258.7          32.9                9.4 +/-    1.62      15.5 +/-    1.62  0.040 / 0.050
G15     291.6          15.7                8.0 +/-    1.26      19.6 +/-    1.26  0.040 / 0.040
G17     298.3          80.0               10.5 +/-    0.49      10.6 +/-    0.49  0.240 / 0.290
G19     239.9          57.6               11.6 +/-    2.25      13.5 +/-    2.25  0.130 / 0.330
G28     44.6           54.7                9.5 +/-    0.83      11.3 +/-    0.83  0.030 / 0.020
G30     146.9          49.1                8.2 +/-    0.55      10.4 +/-    0.55  0.020 / 0.020