PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/13-23:43:00
G10     248.9          24.4               12.9 +/-    1.20      25.5 +/-    1.20  0.140 / 0.370
G13     56.5           32.4                8.5 +/-    1.06      14.1 +/-    1.06  0.090 / 0.400
G15     93.6           58.3               11.1 +/-    0.49      12.8 +/-    0.49  0.070 / 0.120
G16     299.6          14.5                6.1 +/-    2.40      15.4 +/-    2.40  0.110 / 0.120
G18     265.5          54.0               10.7 +/-    2.46      12.9 +/-    2.46  0.040 / 0.040
G20     42.2           49.1                8.6 +/-    0.98      11.0 +/-    0.98  0.050 / 0.040
G21     331.3          59.1                8.9 +/-    0.40      10.2 +/-    0.40  0.230 / 0.380
G26     271.9          16.1               13.3 +/-    2.04      32.2 +/-    2.04  0.130 / 0.250
G29     163.3          49.4               11.6 +/-    0.55      14.7 +/-    0.55  0.040 / 0.050