PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/29-16:43:00
G01     42.0           17.1                8.6 +/-    1.76      20.2 +/-    1.76  0.130 / 0.300
G06     175.0          37.8               11.4 +/-    1.22      17.2 +/-    1.22  0.090 / 0.210
G13     240.9          23.2               12.2 +/-    1.99      24.9 +/-    1.99  0.310 / 0.380
G15     275.7          12.7               10.2 +/-    1.60      26.8 +/-    1.60  0.370 / 0.270
G17     5.4            70.0               10.4 +/-    0.52      11.0 +/-    0.52  0.120 / 0.270
G19     277.8          70.2               10.6 +/-    0.78      11.2 +/-    0.78  0.110 / 0.190
G24     317.7          16.5                7.6 +/-    4.53      18.3 +/-    4.53  0.060 / 0.100
G28     69.8           47.5               10.6 +/-    0.93      13.8 +/-    0.93  0.060 / 0.090
G30     154.5          31.3               10.4 +/-    1.88      17.8 +/-    1.88  0.030 / 0.030