PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/27-14:12:40
G01     221.1          11.7                8.9 +/-    4.31      23.8 +/-    4.31  0.140 / 0.300
G03     256.8          71.0                9.5 +/-    0.59       9.9 +/-    0.59  0.120 / 0.250
G09     298.5          12.1                8.4 +/-    5.24      22.4 +/-    5.24  0.050 / 0.060
G14     91.8           22.8                7.8 +/-    0.96      16.1 +/-    0.96  0.040 / 0.070
G16     136.5          53.0               12.3 +/-    0.83      14.9 +/-    0.83  0.040 / 0.040
G22     192.5          60.0               11.0 +/-    1.54      12.4 +/-    1.54  0.040 / 0.080
G23     316.7          47.2                7.0 +/-    0.87       9.2 +/-    0.87  0.060 / 0.080
G26     79.9           53.2                8.3 +/-    0.73      10.0 +/-    0.73  0.060 / 0.080
G31     49.0           23.9                5.4 +/-    0.71      10.9 +/-    0.71  0.090 / 0.430