PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/29-06:43:10
G10     266.3          37.5                7.4 +/-    1.32      11.3 +/-    1.32  0.150 / 0.440
G13     42.3           19.1                5.4 +/-    1.32      12.1 +/-    1.32  0.150 / 0.390
G15     59.5           48.8                5.5 +/-    0.84       7.1 +/-    0.84  0.120 / 0.170
G16     279.2          12.2                5.2 +/-    2.70      13.7 +/-    2.70  0.120 / 0.160
G20     14.0           65.1                4.4 +/-    0.73       4.8 +/-    0.73  0.160 / 0.300
G21     1.1            71.5                5.4 +/-    0.72       5.7 +/-    0.72  0.120 / 0.380
G24     120.9          13.8                6.9 +/-    3.17      17.7 +/-    3.17  0.050 / 0.040
G27     318.7          18.8                4.1 +/-    0.97       9.3 +/-    0.97  0.050 / 0.050
G29     168.1          32.0                7.0 +/-    0.60      11.8 +/-    0.60  0.080 / 0.090