PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/31-14:27:50
G03     186.4          11.1               11.7 +/-    1.51      31.9 +/-    1.51  0.060 / 0.090
G07     301.3          43.3               10.8 +/-    0.60      14.9 +/-    0.60  0.050 / 0.080
G08     134.6          36.6               12.3 +/-    1.32      18.9 +/-    1.32  0.050 / 0.070
G09     313.4          74.5                8.9 +/-    0.93       9.2 +/-    0.93  0.040 / 0.060
G16     41.7           26.7                8.0 +/-    1.23      15.0 +/-    1.23  0.070 / 0.220
G23     138.7          64.8               12.3 +/-    0.51      13.5 +/-    0.51  0.080 / 0.260
G27     85.4           36.9                9.0 +/-    0.80      13.8 +/-    0.80  0.040 / 0.050
G30     282.3          19.4                9.8 +/-    0.97      21.9 +/-    0.97  0.030 / 0.050