PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/25-20:28:10
G10     266.0          37.8               11.6 +/-    2.06      17.5 +/-    2.06  0.120 / 0.150
G13     42.3           18.8                8.3 +/-    1.09      18.7 +/-    1.09  0.120 / 0.150
G15     64.5           53.9                9.0 +/-    0.95      10.8 +/-    0.95  0.150 / 0.430
G16     279.4          12.5                7.5 +/-    2.70      19.7 +/-    2.70  0.130 / 0.520
G20     295.6          59.9                8.0 +/-    0.64       9.1 +/-    0.64  0.040 / 0.050
G21     1.2            71.3               10.1 +/-    0.78      10.6 +/-    0.78  0.040 / 0.050
G24     118.6          13.9               12.0 +/-    1.33      30.5 +/-    1.33  0.070 / 0.230
G27     319.6          17.1                8.2 +/-    1.82      19.3 +/-    1.82  0.080 / 0.190
G29     167.8          32.7               12.4 +/-    2.25      20.5 +/-    2.25  0.130 / 0.300