PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/23-03:27:30
G05     46.7           22.1                5.2 +/-    2.47      11.0 +/-    2.47  0.150 / 0.090
G13     86.1           36.2               10.1 +/-    0.83      15.6 +/-    0.83  0.100 / 0.090
G15     134.9          46.7               11.9 +/-    0.56      15.7 +/-    0.56  0.230 / 0.270
G20     245.8          47.4               11.0 +/-    2.49      14.3 +/-    2.49  0.210 / 0.190
G21     305.6          41.6                9.3 +/-    0.68      13.1 +/-    0.68  0.080 / 0.090
G25     204.0          17.3               10.8 +/-    4.29      25.3 +/-    4.29  0.060 / 0.090
G26     294.1          21.0               10.4 +/-    0.80      22.4 +/-    0.80  0.470 / 0.430
G29     145.1          82.0                8.5 +/-    0.50       8.6 +/-    0.50  0.120 / 0.390