PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/14-14:43:10
G02     222.1          61.1                8.1 +/-    0.71       9.1 +/-    0.71  0.050 / 0.050
G06     47.3           68.1                8.0 +/-    0.86       8.6 +/-    0.86  0.050 / 0.060
G12     321.1          44.6                6.9 +/-    1.16       9.3 +/-    1.16  0.040 / 0.040
G17     62.8           27.6                6.3 +/-    1.41      11.7 +/-    1.41  0.050 / 0.040
G19     40.5           49.3                7.5 +/-    0.41       9.6 +/-    0.41  0.080 / 0.110
G24     254.7          40.1                7.7 +/-    1.82      11.1 +/-    1.82  0.060 / 0.110
G28     126.0          10.2                8.4 +/-    1.46      23.3 +/-    1.46  0.040 / 0.030