PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/07-13:57:50
G03     224.9          65.4                6.4 +/-    1.10       6.9 +/-    1.10  0.110 / 0.330
G09     305.4          20.6                6.4 +/-    1.41      13.8 +/-    1.41  0.080 / 0.220
G14     101.3          15.8                6.7 +/-    2.34      16.5 +/-    2.34  0.040 / 0.070
G16     115.7          61.5                9.7 +/-    0.61      10.9 +/-    0.61  0.040 / 0.090
G22     187.3          48.1                9.7 +/-    1.32      12.5 +/-    1.32  0.030 / 0.050
G23     327.0          56.4                6.8 +/-    0.79       8.0 +/-    0.79  0.030 / 0.050
G26     62.0           48.1                6.8 +/-    0.56       8.8 +/-    0.56  0.040 / 0.040
G31     54.8           15.0                4.4 +/-    2.87      10.9 +/-    2.87  0.040 / 0.050