PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/07-12:13:10
G01     226.2          17.8                4.0 +/-    2.15       9.3 +/-    2.15  0.040 / 0.030
G03     281.8          71.0                5.5 +/-    0.90       5.7 +/-    0.90  0.040 / 0.030
G14     85.6           24.3                5.5 +/-    1.48      10.8 +/-    1.48  0.130 / 0.180
G16     150.5          42.1                4.4 +/-    0.70       6.1 +/-    0.70  0.110 / 0.170
G22     208.5          69.8                5.2 +/-    0.43       5.6 +/-    0.43  0.030 / 0.030
G23     307.0          37.4                4.1 +/-    1.07       6.3 +/-    1.07  0.030 / 0.030
G26     103.0          54.4                4.6 +/-    0.79       5.5 +/-    0.79  0.110 / 0.180
G31     45.0           33.2                3.7 +/-    1.27       6.1 +/-    1.27  0.100 / 0.170
G32     96.9           10.1                5.7 +/-    1.12      15.8 +/-    1.12  0.040 / 0.070