PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/09-15:57:30
G01     42.0           17.2                9.7 +/-    1.88      23.0 +/-    1.88  0.100 / 0.190
G06     175.2          37.6               13.6 +/-    1.28      20.6 +/-    1.28  0.080 / 0.200
G13     241.0          23.2               12.4 +/-    2.31      25.3 +/-    2.31  0.260 / 0.370
G15     275.2          12.8               11.0 +/-    1.15      29.0 +/-    1.15  0.360 / 0.260
G17     5.5            70.0               11.3 +/-    0.46      12.0 +/-    0.46  0.100 / 0.230
G19     277.7          70.1               12.7 +/-    0.67      13.4 +/-    0.67  0.160 / 0.180
G24     317.7          16.5                8.4 +/-    3.10      20.1 +/-    3.10  0.060 / 0.090
G28     69.9           47.4               11.8 +/-    0.94      15.3 +/-    0.94  0.070 / 0.090
G30     154.5          31.2               10.3 +/-    2.04      17.6 +/-    2.04  0.120 / 0.340