PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/28-06:27:50
G01     317.0          22.3                2.5 +/-    3.19       5.3 +/-    3.19  0.120 / 0.180
G08     253.6          10.4                5.0 +/-    1.47      13.7 +/-    1.47  0.100 / 0.160
G10     87.8           50.0                4.3 +/-    0.76       5.4 +/-    0.76  0.200 / 0.340
G11     298.2          25.1                5.7 +/-    1.27      11.1 +/-    1.27  0.190 / 0.270
G14     305.0          69.9                3.9 +/-    0.55       4.1 +/-    0.55  0.040 / 0.060
G18     299.4          43.6                4.9 +/-    1.09       6.7 +/-    1.09  0.040 / 0.050
G20     108.6          28.8                5.6 +/-    2.23      10.1 +/-    2.23  0.030 / 0.050
G22     303.9          16.0                3.8 +/-    1.99       9.2 +/-    1.99  0.030 / 0.040
G31     172.1          50.0                5.8 +/-    0.57       7.3 +/-    0.57  0.120 / 0.490
G32     20.3           62.2                3.9 +/-    0.55       4.3 +/-    0.55  0.120 / 0.450