PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/23-23:42:40
G05     50.7           12.7                7.6 +/-    0.64      20.0 +/-    0.64  0.080 / 0.150
G10     239.5          16.3               13.8 +/-    2.20      33.3 +/-    2.20  0.080 / 0.160
G13     69.2           35.6               10.1 +/-    0.84      15.8 +/-    0.84  0.100 / 0.390
G15     120.3          55.2               12.1 +/-    0.63      14.4 +/-    0.63  0.110 / 0.450
G16     308.3          14.7                8.5 +/-    1.38      21.2 +/-    1.38  0.130 / 0.210
G20     247.2          23.0               10.4 +/-    2.02      21.3 +/-    2.02  0.100 / 0.260
G21     317.1          49.6               10.6 +/-    1.21      13.4 +/-    1.21  0.050 / 0.060
G26     280.6          20.2               10.3 +/-    1.78      22.6 +/-    1.78  0.050 / 0.070
G29     159.7          67.8                9.8 +/-    0.86      10.5 +/-    0.86  0.030 / 0.040