PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/16-18:12:30
G02     209.1          47.1               17.3 +/-    1.32      22.7 +/-    1.32  0.080 / 0.250
G06     101.8          78.7               15.4 +/-    0.62      15.6 +/-    0.62  0.090 / 0.240
G12     315.3          29.2               12.4 +/-    1.43      22.1 +/-    1.43  0.040 / 0.050
G17     47.9           39.7               12.1 +/-    0.28      17.7 +/-    0.28  0.040 / 0.040
G19     20.3           58.5               13.6 +/-    0.46      15.7 +/-    0.46  0.050 / 0.070
G24     279.4          42.8               11.5 +/-    1.05      16.0 +/-    1.05  0.060 / 0.080
G28     114.4          21.9               13.0 +/-    2.64      27.4 +/-    2.64  0.050 / 0.080