PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/17-12:27:50
G01     40.3           15.2                2.6 +/-    3.08       6.4 +/-    3.08  0.070 / 0.130
G06     173.4          41.8               11.0 +/-   26.07      15.5 +/-   26.07  0.060 / 0.260
G13     236.0          21.0                9.2 +/-   28.46      19.7 +/-   28.46  0.090 / 0.150
G15     274.7          11.0                6.2 +/-   25.54      16.8 +/-   25.54  0.110 / 0.200
G17     8.3            68.2               11.9 +/-   27.12      12.7 +/-   27.12  0.160 / 0.300
G19     272.5          66.0               10.4 +/-   26.69      11.3 +/-   26.69  0.150 / 0.250
G24     315.0          22.8                0.5 +/-   10.26       1.0 +/-   10.26  0.070 / 0.250
G28     72.8           46.8                8.0 +/-   27.12      10.5 +/-   27.12  0.090 / 0.310
G30     155.6          27.5                9.3 +/-   26.19      17.2 +/-   26.19  0.070 / 0.060