PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/28-01:12:50
G10     256.9          30.7               14.6 +/-    2.95      25.1 +/-    2.95  0.040 / 0.050
G13     48.5           26.8                9.5 +/-    3.63      17.8 +/-    3.63  0.060 / 0.050
G15     76.5           56.8               10.7 +/-    0.86      12.5 +/-    0.86  0.300 / 0.350
G16     290.1          13.9               10.1 +/-    1.39      25.8 +/-    1.39  0.240 / 0.320
G18     279.1          58.9               14.1 +/-    1.43      16.1 +/-    1.43  0.140 / 0.140
G20     48.5           41.1               11.6 +/-    0.79      16.5 +/-    0.79  0.140 / 0.160
G21     343.0          65.2               11.2 +/-    0.92      12.2 +/-    0.92  0.190 / 0.280
G26     262.7          12.5               12.5 +/-    6.74      33.0 +/-    6.74  0.190 / 0.210
G27     321.4          12.4                7.7 +/-    2.41      20.3 +/-    2.41  0.040 / 0.070
G29     165.9          39.9               14.0 +/-    1.51      20.3 +/-    1.51  0.060 / 0.060