PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/17-12:42:30
G01     223.6          14.2                7.8 +/-    3.14      19.7 +/-    3.14  0.120 / 0.200
G03     271.9          70.3                5.0 +/-    0.43       5.3 +/-    0.43  0.110 / 0.220
G14     88.2           25.8                6.4 +/-    1.29      12.3 +/-    1.29  0.040 / 0.050
G16     140.4          49.8                8.2 +/-    0.57      10.4 +/-    0.57  0.030 / 0.050
G22     198.5          64.8                8.3 +/-    1.00       9.0 +/-    1.00  0.030 / 0.060
G23     313.3          44.1                5.3 +/-    0.84       7.2 +/-    0.84  0.030 / 0.050
G26     86.3           53.6                6.1 +/-    0.52       7.4 +/-    0.52  0.290 / 0.410
G31     47.5           26.7                5.1 +/-    1.29       9.5 +/-    1.29  0.220 / 0.510