PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/13-15:27:30
G01     45.7           21.5                0.8 +/-   11.64       1.7 +/-   11.64  0.070 / 0.180
G06     176.6          31.1                0.2 +/-   21.92       0.3 +/-   21.92  0.100 / 0.190
G13     246.7          27.0               11.0 +/-    1.19      20.6 +/-    1.19  0.060 / 0.090
G15     280.8          14.4               13.8 +/-   15.17      34.9 +/-   15.17  0.060 / 0.090
G17     351.3          74.8               24.2 +/-   17.53      24.9 +/-   17.53  0.210 / 0.320
G19     260.8          66.6              -35.5 +/-   52.55     -38.4 +/-   52.55  0.200 / 0.320
G24     319.0          11.4               -6.7 +/-   30.91     -18.1 +/-   30.91  0.030 / 0.030
G28     61.5           50.2                2.3 +/-    7.04       2.9 +/-    7.04  0.030 / 0.030
G30     152.4          37.4               10.0 +/-    0.44      15.1 +/-    0.44  0.060 / 0.140