PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/15-04:27:50
G01     223.3          14.1                5.2 +/-   13.52      13.3 +/-   13.52  0.040 / 0.050
G03     278.3          68.7                5.7 +/-    0.67       6.0 +/-    0.67  0.040 / 0.040
G09     298.2          14.7                4.8 +/-    1.06      12.1 +/-    1.06  0.040 / 0.060
G14     89.9           22.3                3.2 +/-    1.12       6.7 +/-    1.12  0.030 / 0.060
G16     140.1          49.8                7.5 +/-    0.94       9.5 +/-    0.94  0.230 / 0.430
G22     210.0          67.2                6.1 +/-    0.51       6.5 +/-    0.51  0.240 / 0.430
G23     310.0          39.6                6.4 +/-    1.33       9.4 +/-    1.33  0.110 / 0.280
G26     87.8           54.1                5.9 +/-    0.64       7.1 +/-    0.64  0.120 / 0.240
G31     47.2           28.0                2.6 +/-    0.66       4.7 +/-    0.66  0.050 / 0.060