PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/08-18:28:00
G02     344.3          77.5                8.9 +/-    0.86       9.1 +/-    0.86  0.040 / 0.080
G05     163.3          36.4               13.9 +/-    1.22      21.4 +/-    1.22  0.040 / 0.080
G06     43.0           35.3                7.9 +/-    1.02      12.5 +/-    1.02  0.020 / 0.030
G12     298.6          78.7                7.3 +/-    1.30       7.4 +/-    1.30  0.020 / 0.040
G19     76.1           28.2                8.9 +/-    0.71      16.1 +/-    0.71  0.030 / 0.040
G24     224.4          20.0               11.7 +/-    1.76      25.7 +/-    1.76  0.040 / 0.040
G25     316.5          32.5                9.9 +/-    1.99      16.6 +/-    1.99  0.060 / 0.120