PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/22-16:12:30
G02     219.4          60.2                8.0 +/-    1.77       9.0 +/-    1.77  0.060 / 0.090
G06     50.1           69.2                7.6 +/-    0.39       8.1 +/-    0.39  0.070 / 0.080
G12     321.0          43.8                6.4 +/-    0.65       8.8 +/-    0.65  0.050 / 0.050
G17     60.9           28.9                7.9 +/-    2.94      14.2 +/-    2.94  0.060 / 0.050
G19     38.8           50.0                7.1 +/-    1.68       8.9 +/-    1.68  0.030 / 0.020
G24     258.8          41.0                8.9 +/-    4.74      12.7 +/-    4.74  0.030 / 0.030
G28     124.5          11.6                7.9 +/-    2.71      21.2 +/-    2.71  0.060 / 0.050