PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/19-23:27:40
G10     252.5          27.4               14.7 +/-    1.65      27.3 +/-    1.65  0.090 / 0.280
G13     52.6           30.1               14.0 +/-    0.73      24.5 +/-    0.73  0.140 / 0.310
G15     84.2           57.7               14.9 +/-    0.42      17.3 +/-    0.42  0.080 / 0.150
G16     295.6          14.3               10.2 +/-    1.49      25.9 +/-    1.49  0.070 / 0.140
G18     271.9          56.8               12.3 +/-    0.67      14.4 +/-    0.67  0.030 / 0.050
G20     45.0           45.6               10.6 +/-    0.47      14.2 +/-    0.47  0.030 / 0.090
G21     336.9          62.2               13.0 +/-    0.37      14.5 +/-    0.37  0.040 / 0.070
G26     268.0          14.5               12.4 +/-    2.52      31.2 +/-    2.52  0.040 / 0.060
G29     164.3          44.4               16.3 +/-    1.26      22.1 +/-    1.26  0.050 / 0.080