PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/06-04:42:30
G02     202.6          37.2                5.6 +/-    0.91       8.5 +/-    0.91  0.060 / 0.120
G06     165.7          67.8                4.0 +/-    0.38       4.3 +/-    0.38  0.070 / 0.120
G12     307.6          14.4                2.1 +/-    2.05       5.3 +/-    2.05  0.170 / 0.330
G17     35.7           49.6                2.4 +/-    1.02       3.0 +/-    1.02  0.070 / 0.300
G19     4.1            64.6                2.3 +/-    0.75       2.5 +/-    0.75  0.040 / 0.050
G24     298.2          37.7                1.9 +/-    2.55       2.9 +/-    2.55  0.050 / 0.030
G28     103.5          30.2                4.9 +/-    0.98       8.6 +/-    0.98  0.040 / 0.030