PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/18-15:12:30
G02     17.4           65.9                5.0 +/-    0.68       5.4 +/-    0.68  0.360 / 0.510
G05     156.8          49.7                7.6 +/-    0.99       9.7 +/-    0.99  0.400 / 0.780
G06     47.7           24.0                5.3 +/-    2.51      10.6 +/-    2.51  0.160 / 0.220
G12     228.0          79.0                5.3 +/-    0.57       5.4 +/-    0.57  0.170 / 0.270
G19     90.6           14.9                6.6 +/-    2.40      16.5 +/-    2.40  0.040 / 0.040
G24     217.2          11.1                7.2 +/-    5.62      19.5 +/-    5.62  0.030 / 0.050
G25     310.2          43.5                5.1 +/-    0.93       7.1 +/-    0.93  0.050 / 0.050
G29     298.2          19.1                6.1 +/-    1.61      13.7 +/-    1.61  0.050 / 0.050