PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/09-16:57:40
G02     216.1          56.9               11.0 +/-    0.99      12.9 +/-    0.99  0.040 / 0.070
G06     57.0           72.8               10.1 +/-    1.22      10.6 +/-    1.22  0.040 / 0.070
G12     319.7          39.7                9.0 +/-    0.97      13.1 +/-    0.97  0.090 / 0.280
G17     57.5           31.8                8.3 +/-    0.95      14.1 +/-    0.95  0.150 / 0.360
G19     34.5           52.2                9.4 +/-    0.39      11.6 +/-    0.39  0.040 / 0.060
G24     264.1          42.1                9.3 +/-    0.72      13.1 +/-    0.72  0.030 / 0.060
G28     122.1          14.3               10.3 +/-    0.99      26.1 +/-    0.99  0.060 / 0.080