PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/27-21:27:50
G10     270.0          39.2               22.3 +/-    1.43      32.9 +/-    1.43  0.110 / 0.220
G13     41.3           17.6               17.6 +/-    1.25      41.2 +/-    1.25  0.090 / 0.180
G15     56.4           46.5               19.3 +/-    0.68      25.4 +/-    0.68  0.040 / 0.040
G16     280.2          10.3               16.0 +/-    1.86      44.3 +/-    1.86  0.040 / 0.040
G18     307.9          65.4               18.0 +/-    0.78      19.5 +/-    0.78  0.100 / 0.590
G20     56.6           32.5               17.7 +/-    1.46      29.4 +/-    1.46  0.080 / 0.710
G21     16.8           74.2               19.4 +/-    0.88      20.1 +/-    0.88  0.090 / 0.140
G24     119.1          15.6               23.1 +/-    2.87      56.5 +/-    2.87  0.070 / 0.120
G27     316.3          22.5               14.4 +/-    2.88      29.7 +/-    2.88  0.130 / 0.280
G29     166.4          23.9               22.0 +/-    3.67      44.2 +/-    3.67  0.120 / 0.280