PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/13-23:58:10
G01     126.1          12.6                9.0 +/-    4.54      23.7 +/-    4.54  0.050 / 0.070
G07     55.9           69.4                7.7 +/-    0.85       8.2 +/-    0.85  0.050 / 0.050
G08     50.6           40.4                7.9 +/-    0.51      11.4 +/-    0.51  0.260 / 0.280
G09     178.9          35.7                9.3 +/-    1.18      14.5 +/-    1.18  0.140 / 0.330
G11     120.1          35.4                8.9 +/-    0.69      14.1 +/-    0.69  0.040 / 0.040
G13     321.1          11.9                3.0 +/-   16.87       8.1 +/-   16.87  0.040 / 0.050
G17     200.6          15.0                7.8 +/-    3.84      19.5 +/-    3.84  0.090 / 0.400
G28     279.2          54.0                9.2 +/-    0.68      11.1 +/-    0.68  0.100 / 0.360