PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/15-17:27:50
G10     252.6          27.6               11.9 +/-    1.31      21.9 +/-    1.31  0.050 / 0.060
G13     52.3           29.7                9.1 +/-    0.96      16.1 +/-    0.96  0.060 / 0.070
G15     80.0           56.1               10.5 +/-    0.30      12.4 +/-    0.30  0.040 / 0.050
G16     299.1          13.2                5.6 +/-    1.48      14.7 +/-    1.48  0.040 / 0.050
G18     274.5          58.7               11.3 +/-    0.63      13.0 +/-    0.63  0.080 / 0.280
G20     43.2           48.0                8.9 +/-    0.68      11.5 +/-    0.68  0.090 / 0.250
G21     343.3          64.6                8.6 +/-    0.99       9.4 +/-    0.99  0.080 / 0.160
G26     269.4          14.3               10.0 +/-    1.57      25.2 +/-    1.57  0.070 / 0.190
G29     162.7          41.4               13.7 +/-    1.09      19.4 +/-    1.09  0.110 / 0.290