PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/16-16:28:10
G02     51.5           39.5                7.5 +/-    0.58      11.0 +/-    0.58  0.030 / 0.020
G05     87.4           70.2                7.3 +/-    0.41       7.7 +/-    0.41  0.030 / 0.030
G12     188.4          44.7               11.7 +/-    2.18      15.9 +/-    2.18  0.050 / 0.060
G20     203.3          48.0               11.1 +/-    0.95      14.3 +/-    0.95  0.040 / 0.060
G21     263.6          12.9                8.5 +/-    2.02      22.2 +/-    2.02  0.070 / 0.080
G25     251.6          57.6               10.4 +/-    0.60      12.1 +/-    0.60  0.060 / 0.080
G29     325.3          49.9                9.0 +/-    1.17      11.3 +/-    1.17  0.230 / 0.710