PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/19-22:12:50
G02     87.9           11.2               11.8 +/-    1.86      32.2 +/-    1.86  0.100 / 0.250
G05     45.2           31.3               11.3 +/-    0.58      19.2 +/-    0.58  0.100 / 0.260
G13     93.0           36.0               14.4 +/-    1.11      22.4 +/-    1.11  0.110 / 0.360
G15     140.7          42.8               15.2 +/-    1.05      21.2 +/-    1.05  0.090 / 0.270
G18     235.5          31.9               12.3 +/-    0.95      20.7 +/-    0.95  0.080 / 0.100
G20     15.7           77.1               10.7 +/-    1.02      11.0 +/-    1.02  0.080 / 0.080
G21     302.3          40.0               11.8 +/-    0.85      17.1 +/-    0.85  0.020 / 0.030
G25     201.8          17.9               14.4 +/-    1.99      33.4 +/-    1.99  0.030 / 0.030
G26     301.6          18.8               10.9 +/-    2.13      24.6 +/-    2.13  0.050 / 0.100
G29     133.8          82.3               13.2 +/-    0.81      13.3 +/-    0.81  0.050 / 0.090