PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/31-18:28:10
G10     252.4          27.4               12.8 +/-    1.71      23.7 +/-    1.71  0.040 / 0.050
G13     52.6           29.9               12.1 +/-    1.20      21.3 +/-    1.20  0.040 / 0.050
G15     80.7           56.3               12.4 +/-    0.95      14.6 +/-    0.95  0.050 / 0.070
G16     299.1          13.2                9.6 +/-    1.64      24.9 +/-    1.64  0.050 / 0.060
G18     273.8          58.3               12.4 +/-    0.82      14.3 +/-    0.82  0.120 / 0.330
G20     43.5           47.7               10.4 +/-    0.98      13.5 +/-    0.98  0.080 / 0.260
G21     341.6          64.0               11.6 +/-    0.64      12.7 +/-    0.64  0.070 / 0.150
G26     270.3          14.3               11.7 +/-    1.34      29.6 +/-    1.34  0.070 / 0.150
G29     162.4          41.0               15.9 +/-    0.66      22.7 +/-    0.66  0.110 / 0.370