PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/16-08:28:00
G01     120.7          16.6                5.5 +/-    1.31      13.2 +/-    1.31  0.050 / 0.060
G07     77.9           66.1                4.6 +/-    0.42       5.0 +/-    0.42  0.040 / 0.050
G08     45.4           31.8                2.8 +/-    0.46       4.7 +/-    0.46  0.060 / 0.080
G09     176.5          27.3                6.2 +/-    0.91      11.6 +/-    0.91  0.060 / 0.090
G11     108.0          38.1                5.5 +/-    0.94       8.2 +/-    0.94  0.070 / 0.170
G13     319.4          16.1                0.7 +/-    1.09       1.6 +/-    1.09  0.070 / 0.150
G17     200.6          24.6                4.2 +/-    0.78       8.4 +/-    0.78  0.030 / 0.030
G28     290.1          56.8                4.2 +/-    0.60       4.9 +/-    0.60  0.020 / 0.030
G30     342.7          66.3                1.4 +/-    0.67       1.6 +/-    0.67  0.100 / 0.110