PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/12-13:12:30
G02     208.5          44.6                6.5 +/-    0.95       8.8 +/-    0.95  0.070 / 0.080
G06     115.5          78.6                5.5 +/-    0.54       5.6 +/-    0.54  0.080 / 0.080
G12     313.1          25.3                3.7 +/-    1.10       7.3 +/-    1.10  0.040 / 0.050
G17     44.4           42.6                4.5 +/-    1.62       6.4 +/-    1.62  0.040 / 0.050
G19     25.0           56.4                5.7 +/-    0.75       6.7 +/-    0.75  0.040 / 0.040
G24     284.3          41.1               -2.3 +/-    1.18      -3.3 +/-    1.18  0.040 / 0.040
G28     110.2          29.3                8.2 +/-    2.04      14.5 +/-    2.04  0.060 / 0.060