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                7.5 +/-    1.03       9.9 +/-    1.03  0.040 / 0.040
G05     110.3          68.4                9.6 +/-    0.71      10.2 +/-    0.71  0.040 / 0.040
G06     58.6           10.7                6.9 +/-    1.86      18.9 +/-    1.86  0.030 / 0.030
G12     193.9          58.6               11.2 +/-    0.56      12.9 +/-    0.56  0.030 / 0.040
G25     276.9          58.5                3.5 +/-    0.64       4.0 +/-    0.64  0.030 / 0.030
G29     316.9          39.7                8.8 +/-    0.98      12.9 +/-    0.98  0.030 / 0.030