PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/17-13:43:10
G02     59.0           33.5                4.1 +/-    2.53       6.7 +/-    2.53  0.120 / 0.210
G05     60.5           63.9                5.0 +/-    0.37       5.5 +/-    0.37  0.130 / 0.200
G12     184.3          32.4                5.6 +/-    1.17       9.4 +/-    1.17  0.060 / 0.080
G13     127.6          15.2                7.1 +/-    2.29      17.5 +/-    2.29  0.040 / 0.080
G15     165.6          11.3               -1.2 +/-   17.44      -3.3 +/-   17.44  0.110 / 0.330
G21     272.3          18.9                5.2 +/-    2.15      11.6 +/-    2.15  0.180 / 0.390
G25     228.5          50.8                6.7 +/-    2.32       8.3 +/-    2.32  0.060 / 0.060
G29     329.2          55.2                4.1 +/-    0.53       4.9 +/-    0.53  0.080 / 0.080