PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/13-00:28:00
G10     266.0          36.8               10.5 +/-    1.92      16.1 +/-    1.92  0.230 / 0.380
G13     42.9           20.3                8.6 +/-    2.18      18.7 +/-    2.18  0.170 / 0.370
G15     61.6           50.9                8.0 +/-    0.55       9.9 +/-    0.55  0.040 / 0.030
G16     281.8          11.7                9.5 +/-    1.40      25.6 +/-    1.40  0.040 / 0.030
G18     297.2          63.5                9.5 +/-    0.90      10.5 +/-    0.90  0.220 / 0.250
G20     54.6           34.2                8.3 +/-    2.01      13.4 +/-    2.01  0.170 / 0.300
G21     1.4            71.6               10.1 +/-    0.36      10.5 +/-    0.36  0.080 / 0.060
G24     122.1          13.4               11.6 +/-    2.42      29.9 +/-    2.42  0.120 / 0.070
G27     318.1          19.7                8.3 +/-    1.51      18.4 +/-    1.51  0.060 / 0.100
G29     167.0          29.5               11.8 +/-    2.48      21.0 +/-    2.48  0.080 / 0.110