PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/29-20:58:00
G10     290.9          49.7                9.7 +/-    2.72      12.2 +/-    2.72  0.040 / 0.040
G15     48.1           36.8                9.2 +/-    0.95      14.1 +/-    0.95  0.040 / 0.040
G20     341.0          65.4                9.6 +/-    0.67      10.5 +/-    0.67  0.070 / 0.110
G21     79.7           76.1               10.6 +/-    0.51      10.9 +/-    0.51  0.080 / 0.130
G24     99.5           24.4               11.6 +/-    1.39      22.9 +/-    1.39  0.090 / 0.130
G27     306.2          31.1                9.4 +/-    0.99      16.0 +/-    0.99  0.080 / 0.120
G29     168.4          12.1               14.7 +/-    1.80      39.1 +/-    1.80  0.070 / 0.080
G32     208.5          28.3               14.0 +/-    1.29      25.5 +/-    1.29  0.070 / 0.060