PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/28-03:12:50
G10     284.7          47.0               11.0 +/-    2.94      14.4 +/-    2.94  0.060 / 0.080
G15     49.0           37.8                7.8 +/-    1.09      11.7 +/-    1.09  0.080 / 0.090
G20     321.3          63.4               11.4 +/-    0.56      12.6 +/-    0.56  0.030 / 0.040
G21     54.8           77.6               10.5 +/-    0.61      10.7 +/-    0.61  0.030 / 0.040
G24     106.1          22.4                7.8 +/-    2.12      16.2 +/-    2.12  0.040 / 0.060
G27     309.2          29.5               10.6 +/-    0.73      18.7 +/-    0.73  0.030 / 0.050
G29     169.0          16.9               10.3 +/-    1.64      24.5 +/-    1.64  0.160 / 0.170
G32     207.0          24.8               12.5 +/-    1.05      24.5 +/-    1.05  0.100 / 0.130