PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/12-13:57:40
G02     31.1           56.4                5.2 +/-    1.05       6.1 +/-    1.05  0.030 / 0.040
G05     148.3          59.4                7.6 +/-    0.33       8.7 +/-    0.33  0.020 / 0.030
G06     52.8           15.8                4.4 +/-    2.44      10.8 +/-    2.44  0.040 / 0.030
G12     195.5          68.7                5.6 +/-    0.73       6.0 +/-    0.73  0.030 / 0.030
G25     299.7          51.8                7.0 +/-    1.19       8.6 +/-    1.19  0.050 / 0.060
G29     305.5          26.1                5.8 +/-    1.34      11.0 +/-    1.34  0.040 / 0.050