PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-21:12:30
G02     203.9          37.4               16.0 +/-    1.11      24.3 +/-    1.11  0.140 / 0.130
G06     152.1          72.3               15.1 +/-    0.47      15.8 +/-    0.47  0.110 / 0.150
G12     309.2          18.1               12.2 +/-    1.88      28.1 +/-    1.88  0.060 / 0.090
G17     35.9           49.5               11.6 +/-    0.85      14.7 +/-    0.85  0.070 / 0.100
G19     2.4            64.6               12.2 +/-    0.40      13.4 +/-    0.40  0.040 / 0.030
G24     294.8          39.5               10.5 +/-    5.60      15.4 +/-    5.60  0.040 / 0.030
G28     105.0          29.4               13.2 +/-    1.40      23.5 +/-    1.40  0.030 / 0.030