PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/01-21:57:50
G10     261.5          35.0               10.8 +/-    1.67      17.2 +/-    1.67  0.110 / 0.260
G13     44.6           22.0                9.0 +/-    1.41      18.8 +/-    1.41  0.160 / 0.300
G15     70.1           55.8                9.4 +/-    0.55      11.1 +/-    0.55  0.050 / 0.050
G16     282.1          14.1               10.1 +/-    1.15      25.8 +/-    1.15  0.060 / 0.050
G20     261.0          20.5                6.3 +/-    1.04      13.7 +/-    1.04  0.120 / 0.370
G21     348.8          67.7                9.3 +/-    1.30      10.0 +/-    1.30  0.140 / 0.380
G24     122.9          11.3               12.5 +/-    2.30      34.0 +/-    2.30  0.110 / 0.400
G26     255.6          10.3               11.2 +/-    2.29      31.1 +/-    2.29  0.100 / 0.400
G27     320.8          14.3                8.8 +/-    3.09      22.3 +/-    3.09  0.080 / 0.300
G29     167.7          38.2               12.1 +/-    0.72      18.2 +/-    0.72  0.070 / 0.310