PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/19-23:57:40
G10     265.3          36.4               12.5 +/-    1.20      19.4 +/-    1.20  0.160 / 0.430
G13     43.2           20.9               11.4 +/-    1.16      24.6 +/-    1.16  0.160 / 0.390
G15     62.0           51.1               14.0 +/-    0.99      17.4 +/-    0.99  0.070 / 0.100
G16     282.6          11.8               12.7 +/-    2.24      34.2 +/-    2.24  0.070 / 0.100
G18     296.3          63.4               10.9 +/-    0.93      12.0 +/-    0.93  0.050 / 0.060
G20     54.1           34.8               10.6 +/-    1.41      16.8 +/-    1.41  0.050 / 0.050
G21     0.5            71.3               13.3 +/-    0.80      14.0 +/-    0.80  0.040 / 0.080
G24     122.6          13.0               13.9 +/-    2.19      36.3 +/-    2.19  0.040 / 0.100
G27     318.4          19.2               10.8 +/-    2.15      24.3 +/-    2.15  0.110 / 0.200
G29     166.8          29.9               14.7 +/-    0.70      25.8 +/-    0.70  0.110 / 0.210