PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/12-17:57:50
G05     47.9           21.3                9.2 +/-    2.85      19.5 +/-    2.85  0.040 / 0.100
G10     235.6          12.1                6.3 +/-   24.88      16.9 +/-   24.88  0.040 / 0.060
G13     76.5           36.2               11.9 +/-    1.04      18.5 +/-    1.04  0.150 / 0.490
G15     132.1          51.1               11.5 +/-    0.55      14.3 +/-    0.55  0.160 / 0.400
G16     314.6          12.3                7.5 +/-    4.80      19.9 +/-    4.80  0.080 / 0.090
G20     247.3          36.3               12.4 +/-    1.73      19.3 +/-    1.73  0.080 / 0.090
G21     313.1          47.0               11.0 +/-    1.15      14.5 +/-    1.15  0.040 / 0.050
G26     288.7          20.3                9.4 +/-    2.67      20.6 +/-    2.67  0.050 / 0.040
G29     154.1          73.6               12.1 +/-    1.13      12.6 +/-    1.13  0.160 / 0.170