PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/28-02:57:50
G01     319.5          16.0                3.4 +/-    1.73       8.1 +/-    1.73  0.150 / 0.400
G08     257.9          14.4                8.5 +/-    2.02      21.5 +/-    2.02  0.120 / 0.330
G10     74.6           55.5                4.2 +/-    0.38       5.0 +/-    0.38  0.030 / 0.040
G11     303.8          23.6                6.4 +/-    0.62      12.9 +/-    0.62  0.030 / 0.040
G14     293.7          71.0                6.4 +/-    0.60       6.8 +/-    0.60  0.050 / 0.050
G18     99.1           31.6                5.8 +/-    1.12       9.9 +/-    1.12  0.050 / 0.060
G31     177.6          38.2                7.9 +/-    1.31      11.9 +/-    1.31  0.140 / 0.300
G32     356.4          70.1                5.7 +/-    0.82       6.0 +/-    0.82  0.140 / 0.240