PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/11-14:43:10
G01     67.9           32.3                8.6 +/-    1.79      14.4 +/-    1.79  0.090 / 0.260
G07     138.4          25.9                7.2 +/-    2.81      13.7 +/-    2.81  0.080 / 0.270
G11     51.2           26.5                5.8 +/-    2.53      11.0 +/-    2.53  0.050 / 0.120
G13     274.0          36.6                9.7 +/-    0.91      15.0 +/-    0.91  0.060 / 0.120
G15     303.2          14.6                5.6 +/-    2.63      14.1 +/-    2.63  0.040 / 0.020
G17     240.5          73.8                9.4 +/-    0.58       9.8 +/-    0.58  0.040 / 0.030
G19     226.2          46.2               10.2 +/-    2.16      13.5 +/-    2.16  0.060 / 0.100
G28     23.8           58.6                8.6 +/-    3.67       9.9 +/-    3.67  0.080 / 0.110
G30     136.9          61.9                7.7 +/-    0.40       8.6 +/-    0.40  0.060 / 0.060