PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/28-21:28:10
G02     207.5          46.8               16.7 +/-    0.54      21.9 +/-    0.54  0.080 / 0.130
G06     117.6          78.7               13.2 +/-    0.36      13.4 +/-    0.36  0.090 / 0.170
G12     313.7          25.5               10.7 +/-    1.17      20.7 +/-    1.17  0.050 / 0.080
G17     44.4           43.1               12.2 +/-    1.37      16.9 +/-    1.37  0.080 / 0.060
G19     19.1           59.0               11.9 +/-    0.64      13.7 +/-    0.64  0.040 / 0.030
G24     283.2          42.2               15.3 +/-    3.17      21.6 +/-    3.17  0.040 / 0.030
G28     112.9          23.1               13.4 +/-    1.14      27.3 +/-    1.14  0.040 / 0.040