PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/04-12:43:10
G01     220.7          12.2                3.6 +/-    3.92       9.5 +/-    3.92  0.030 / 0.040
G03     252.7          72.3                5.3 +/-    0.76       5.5 +/-    0.76  0.040 / 0.040
G09     297.6          10.8              -11.0 +/-   27.12     -30.2 +/-   27.12  0.040 / 0.030
G14     92.5           19.4                5.5 +/-    0.94      12.3 +/-    0.94  0.030 / 0.040
G16     143.7          49.9                7.9 +/-    0.71      10.0 +/-    0.71  0.180 / 0.560
G22     197.0          62.0                6.8 +/-    1.62       7.6 +/-    1.62  0.100 / 0.400
G23     313.0          43.0                4.8 +/-    1.25       6.6 +/-    1.25  0.130 / 0.200
G26     87.8           55.3                4.9 +/-    0.72       5.8 +/-    0.72  0.100 / 0.220
G31     48.2           26.6                4.6 +/-    1.70       8.8 +/-    1.70  0.040 / 0.070