PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/29-07:42:50
G01     223.9          14.7                6.2 +/-    1.71      15.5 +/-    1.71  0.040 / 0.040
G03     280.1          68.4                4.3 +/-    0.54       4.6 +/-    0.54  0.040 / 0.040
G09     296.7          11.6                5.0 +/-    8.86      13.4 +/-    8.86  0.110 / 0.200
G14     88.8           23.7                2.8 +/-    1.76       5.7 +/-    1.76  0.100 / 0.220
G16     139.6          49.5                5.4 +/-    0.87       6.9 +/-    0.87  0.050 / 0.070
G22     209.1          67.6                3.9 +/-    1.56       4.2 +/-    1.56  0.040 / 0.050
G23     310.3          40.2                4.6 +/-    0.61       6.6 +/-    0.61  0.040 / 0.040
G26     87.1           53.6                4.6 +/-    0.52       5.5 +/-    0.52  0.030 / 0.040
G31     47.2           27.2                1.1 +/-    2.44       2.1 +/-    2.44  0.250 / 0.280