PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/19-12:12:30
G02     218.5          59.6                6.1 +/-    0.58       7.0 +/-    0.58  0.060 / 0.080
G06     52.9           72.2                5.1 +/-    0.52       5.4 +/-    0.52  0.060 / 0.070
G12     319.5          39.5                3.4 +/-    0.64       5.0 +/-    0.64  0.050 / 0.060
G17     60.3           29.1                3.0 +/-    1.19       5.4 +/-    1.19  0.060 / 0.070
G19     37.4           50.7                2.5 +/-    0.53       3.1 +/-    0.53  0.040 / 0.030
G24     258.1          41.5                6.1 +/-    1.68       8.7 +/-    1.68  0.040 / 0.040
G28     123.6          13.3                5.5 +/-    2.32      14.3 +/-    2.32  0.050 / 0.050