PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/13-14:27:40
G01     72.2           32.8                6.3 +/-    1.15      10.3 +/-    1.15  0.070 / 0.120
G07     136.4          29.2                6.6 +/-    1.37      11.8 +/-    1.37  0.070 / 0.110
G11     53.6           29.0                4.9 +/-    0.71       8.7 +/-    0.71  0.040 / 0.040
G13     278.7          36.9                8.0 +/-    1.01      12.2 +/-    1.01  0.040 / 0.050
G15     306.3          13.8                5.2 +/-    2.81      13.3 +/-    2.81  0.060 / 0.110
G17     232.3          70.6                7.3 +/-    0.87       7.7 +/-    0.87  0.050 / 0.130
G19     223.3          42.8                9.5 +/-    1.85      13.2 +/-    1.85  0.030 / 0.050
G28     17.4           59.4                6.2 +/-    0.53       7.1 +/-    0.53  0.030 / 0.040
G30     132.7          65.4                6.0 +/-    0.64       6.6 +/-    0.64  0.060 / 0.070