PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/31-21:57:40
G03     192.4          27.0               13.9 +/-    2.50      26.0 +/-    2.50  0.110 / 0.160
G07     282.8          32.9               10.8 +/-    0.79      17.8 +/-    0.79  0.090 / 0.150
G08     148.0          21.2               15.3 +/-    1.52      32.7 +/-    1.52  0.090 / 0.330
G09     320.2          54.1               12.6 +/-    1.08      15.2 +/-    1.08  0.130 / 0.280
G16     46.1           47.5                9.7 +/-    0.60      12.6 +/-    0.60  0.040 / 0.070
G22     179.0          12.6               12.3 +/-    2.64      32.3 +/-    2.64  0.030 / 0.080
G23     66.8           82.9               10.4 +/-    0.74      10.5 +/-    0.74  0.060 / 0.130
G26     43.0           18.0                8.6 +/-    0.77      19.9 +/-    0.77  0.050 / 0.100
G27     107.0          30.2               12.8 +/-    0.74      22.4 +/-    0.74  0.030 / 0.030
G30     269.2          11.2                5.5 +/-   26.12      15.0 +/-   26.12  0.030 / 0.030