PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/23-02:12:20
G02     42.8           46.5                6.8 +/-    0.68       9.0 +/-    0.68  0.040 / 0.050
G05     110.3          68.4                7.9 +/-    1.03       8.4 +/-    1.03  0.040 / 0.040
G06     58.6           10.7                7.3 +/-    2.91      19.9 +/-    2.91  0.020 / 0.040
G12     193.9          58.6               10.6 +/-    1.30      12.2 +/-    1.30  0.030 / 0.050
G25     276.9          58.5                8.7 +/-    0.65      10.0 +/-    0.65  0.030 / 0.030
G29     316.9          39.7                9.2 +/-    1.06      13.4 +/-    1.06  0.030 / 0.030