PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/30-23:28:10
G10     244.2          21.1               11.9 +/-    1.53      25.5 +/-    1.53  0.120 / 0.680
G13     61.5           33.6                8.9 +/-    0.87      14.5 +/-    0.87  0.190 / 0.560
G15     108.2          58.0                9.7 +/-    0.95      11.2 +/-    0.95  0.100 / 0.170
G16     302.0          15.8                6.1 +/-    2.93      14.9 +/-    2.93  0.120 / 0.150
G20     251.2          24.1                6.1 +/-    1.80      12.1 +/-    1.80  0.030 / 0.060
G21     323.6          54.0                9.3 +/-    1.95      11.2 +/-    1.95  0.040 / 0.070
G26     273.9          18.5                9.5 +/-    1.39      21.7 +/-    1.39  0.040 / 0.050
G29     162.7          60.2               10.8 +/-    0.72      12.2 +/-    0.72  0.030 / 0.050