PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/28-15:27:30
G02     43.3           46.1                8.9 +/-    0.69      11.8 +/-    0.69  0.030 / 0.040
G05     113.9          70.0               10.7 +/-    0.68      11.3 +/-    0.68  0.030 / 0.030
G12     187.3          52.7               10.2 +/-    1.61      12.5 +/-    1.61  0.040 / 0.040
G25     274.3          58.0               10.1 +/-    0.81      11.6 +/-    0.81  0.040 / 0.050
G29     315.7          37.3                7.8 +/-    0.83      11.9 +/-    0.83  0.040 / 0.050