PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/28-14:43:10
G02     220.8          64.7               17.8 +/-    1.03      19.5 +/-    1.03  0.070 / 0.080
G06     49.0           71.2               15.7 +/-    0.61      16.5 +/-    0.61  0.090 / 0.090
G12     320.1          40.5               12.6 +/-    1.10      18.2 +/-    1.10  0.050 / 0.070
G17     63.5           26.9               12.4 +/-    0.93      23.3 +/-    0.93  0.050 / 0.070
G19     47.6           44.1               14.0 +/-    1.14      19.1 +/-    1.14  0.070 / 0.120
G24     260.6          40.0               14.6 +/-    1.88      21.2 +/-    1.88  0.060 / 0.100