PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/05-12:27:40
G01     86.8           32.3                5.6 +/-    0.80       9.4 +/-    0.80  0.020 / 0.030
G07     128.0          40.6                7.3 +/-    0.89      10.5 +/-    0.89  0.020 / 0.030
G11     64.4           36.5                5.0 +/-    0.52       7.7 +/-    0.52  0.030 / 0.070
G13     293.8          35.4                6.6 +/-    1.19      10.4 +/-    1.19  0.040 / 0.060
G17     216.4          58.9                9.0 +/-    0.57      10.4 +/-    0.57  0.040 / 0.040
G19     215.7          31.3                7.3 +/-    1.07      12.5 +/-    1.07  0.040 / 0.050
G28     355.0          61.4                5.7 +/-    1.07       6.4 +/-    1.07  0.080 / 0.080
G30     108.0          75.6                6.9 +/-    0.72       7.1 +/-    0.72  0.090 / 0.100