PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/21-01:43:00
G01     253.3          36.3                5.6 +/-    1.08       8.7 +/-    1.08  0.040 / 0.050
G03     316.2          40.1                5.8 +/-    0.92       8.4 +/-    0.92  0.040 / 0.050
G11     237.8          13.9                7.7 +/-    2.77      19.7 +/-    2.77  0.060 / 0.120
G14     59.2           41.0                3.5 +/-    0.45       5.0 +/-    0.45  0.060 / 0.090
G16     167.5          13.9               -8.2 +/-    8.65     -21.1 +/-    8.65  0.060 / 0.110
G22     307.6          63.3                5.1 +/-    0.77       5.6 +/-    0.77  0.100 / 0.120
G23     284.5          16.8                6.2 +/-    3.15      14.7 +/-    3.15  0.030 / 0.040
G26     143.7          34.3                8.1 +/-    0.63      13.0 +/-    0.63  0.030 / 0.040
G31     40.5           65.2                2.9 +/-    0.67       3.1 +/-    0.67  0.120 / 0.520
G32     74.3           26.5                4.0 +/-    1.19       7.5 +/-    1.19  0.050 / 0.090