PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/04-16:27:30
G02     32.1           56.7               12.5 +/-    0.48      14.6 +/-    0.48  0.040 / 0.040
G05     148.3          59.6               15.1 +/-    0.75      17.2 +/-    0.75  0.040 / 0.060
G06     52.9           18.2               10.7 +/-    0.90      24.6 +/-    0.90  0.030 / 0.040
G12     203.0          69.3               13.4 +/-    0.99      14.2 +/-    0.99  0.030 / 0.040
G20     198.3          25.2               14.2 +/-    2.37      27.7 +/-    2.37  0.090 / 0.230
G25     296.1          54.8               14.3 +/-    0.95      17.1 +/-    0.95  0.070 / 0.260
G29     308.9          31.2               11.1 +/-    1.14      19.0 +/-    1.14  0.040 / 0.050