PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/02-22:42:50
G10     287.2          48.2                9.3 +/-    1.69      12.0 +/-    1.69  0.060 / 0.110
G15     49.0           38.6                6.4 +/-    0.34       9.5 +/-    0.34  0.070 / 0.100
G20     280.0          34.1                4.8 +/-    0.84       7.7 +/-    0.84  0.040 / 0.030
G21     61.8           77.7               10.8 +/-    0.67      11.1 +/-    0.67  0.040 / 0.050
G24     103.1          23.3                8.9 +/-    2.19      18.1 +/-    2.19  0.080 / 0.230
G27     307.9          30.2                7.2 +/-    2.15      12.6 +/-    2.15  0.080 / 0.190
G29     169.0          15.5               13.8 +/-    2.59      33.9 +/-    2.59  0.040 / 0.060
G32     207.5          26.6               12.1 +/-    1.42      22.9 +/-    1.42  0.050 / 0.060