PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/02-09:27:50
G01     225.7          16.4                4.2 +/-    1.56      10.1 +/-    1.56  0.140 / 0.150
G03     284.8          68.0                4.9 +/-    0.37       5.3 +/-    0.37  0.110 / 0.150
G14     86.2           26.1                2.7 +/-    2.16       5.2 +/-    2.16  0.050 / 0.040
G16     142.7          47.1                5.6 +/-    0.98       7.4 +/-    0.98  0.040 / 0.030
G22     209.6          69.1                5.3 +/-    0.41       5.6 +/-    0.41  0.300 / 0.260
G23     309.3          39.7                3.0 +/-    1.04       4.5 +/-    1.04  0.230 / 0.290
G26     91.8           53.6                5.8 +/-    1.17       7.0 +/-    1.17  0.050 / 0.090
G31     46.3           29.2                2.6 +/-    1.64       4.7 +/-    1.64  0.060 / 0.090