PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/19-23:57:40
G10     298.5          52.2                9.1 +/-    1.65      11.2 +/-    1.65  0.060 / 0.090
G14     210.6          11.4               -6.6 +/-   13.59     -17.8 +/-   13.59  0.060 / 0.090
G15     46.5           31.0                7.3 +/-    1.14      12.6 +/-    1.14  0.040 / 0.040
G20     293.9          46.0                6.6 +/-    0.52       8.7 +/-    0.52  0.040 / 0.040
G21     96.1           74.8                9.9 +/-    0.50      10.2 +/-    0.50  0.080 / 0.100
G24     95.0           26.5               10.1 +/-    1.61      19.0 +/-    1.61  0.080 / 0.130
G27     300.0          34.4                8.7 +/-    1.53      14.1 +/-    1.53  0.170 / 0.470
G32     210.5          34.5               12.4 +/-    2.01      19.8 +/-    2.01  0.050 / 0.080