PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/19-17:27:50
G10     290.4          49.6                9.7 +/-    0.80      12.3 +/-    0.80  0.070 / 0.090
G15     47.7           34.9                8.2 +/-    0.85      13.1 +/-    0.85  0.060 / 0.120
G20     340.0          65.3                8.5 +/-    1.03       9.3 +/-    1.03  0.060 / 0.050
G21     82.9           75.0               10.6 +/-    1.31      10.9 +/-    1.31  0.040 / 0.050
G24     98.6           24.1                9.7 +/-    0.83      19.3 +/-    0.83  0.150 / 0.250
G27     307.3          30.2               16.9 +/-    1.77      29.5 +/-    1.77  0.200 / 0.250
G29     167.9          11.7               14.1 +/-    2.95      37.9 +/-    2.95  0.060 / 0.120
G32     208.6          26.7               11.2 +/-    1.38      21.0 +/-    1.38  0.060 / 0.140