PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/27-17:28:10
G02     209.5          47.1               15.6 +/-    1.04      20.5 +/-    1.04  0.070 / 0.100
G06     98.3           78.6               15.9 +/-    0.50      16.2 +/-    0.50  0.060 / 0.120
G12     315.6          30.1               16.3 +/-    1.50      28.4 +/-    1.50  0.060 / 0.090
G17     48.7           39.0               13.2 +/-    0.59      19.5 +/-    0.59  0.050 / 0.070
G19     20.6           58.4               14.8 +/-    0.20      17.1 +/-    0.20  0.080 / 0.290
G24     278.6          42.9               13.8 +/-    1.20      19.1 +/-    1.20  0.090 / 0.280
G28     114.7          21.7               13.2 +/-    1.39      27.9 +/-    1.39  0.060 / 0.080