PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/29-12:13:10
G01     79.0           33.2                2.9 +/-    1.45       4.8 +/-    1.45  0.030 / 0.030
G07     133.0          37.0                4.9 +/-    1.85       7.5 +/-    1.85  0.030 / 0.030
G11     58.0           33.9                4.8 +/-    1.94       7.7 +/-    1.94  0.050 / 0.050
G13     282.9          38.0                6.1 +/-    1.42       9.2 +/-    1.42  0.040 / 0.060
G15     311.6          11.2               -7.4 +/-   10.82     -20.2 +/-   10.82  0.040 / 0.080
G17     223.1          64.9                7.2 +/-    0.95       7.9 +/-    0.95  0.050 / 0.080
G18     54.2           20.7                4.3 +/-    4.58       9.3 +/-    4.58  0.080 / 0.090
G19     219.5          31.9                4.0 +/-    1.27       6.7 +/-    1.27  0.050 / 0.070
G28     6.4            60.7                4.0 +/-    1.16       4.5 +/-    1.16  0.240 / 0.230
G30     125.6          70.5                5.2 +/-    0.52       5.5 +/-    0.52  0.250 / 0.350