PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/19-20:57:40
G10     268.1          39.1               10.3 +/-    1.28      15.2 +/-    1.28  0.100 / 0.160
G13     41.4           17.3                7.5 +/-    0.69      17.6 +/-    0.69  0.120 / 0.180
G15     62.2           52.8                8.5 +/-    0.87      10.3 +/-    0.87  0.040 / 0.040
G16     277.5          11.9                8.8 +/-    5.32      23.6 +/-    5.32  0.040 / 0.050
G20     299.4          60.7                7.7 +/-    0.58       8.6 +/-    0.58  0.170 / 0.570
G21     5.7            72.4                9.5 +/-    0.72       9.9 +/-    0.72  0.350 / 0.650
G24     117.1          15.1               11.7 +/-    2.17      29.0 +/-    2.17  0.120 / 0.210
G27     318.7          18.7                7.7 +/-    1.39      17.6 +/-    1.39  0.110 / 0.210
G29     168.1          30.6               10.0 +/-    1.40      17.3 +/-    1.40  0.090 / 0.300
G32     204.2          10.9               -3.7 +/-   43.50     -10.2 +/-   43.50  0.110 / 0.270