PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/04-14:28:10
G01     38.5           11.4                8.7 +/-    2.60      23.6 +/-    2.60  0.090 / 0.180
G02     200.2          12.3               13.8 +/-    3.63      36.6 +/-    3.63  0.100 / 0.190
G06     174.0          45.5               14.6 +/-    0.90      19.6 +/-    0.90  0.080 / 0.220
G13     234.7          18.1               11.4 +/-    1.66      26.4 +/-    1.66  0.070 / 0.170
G15     267.2          10.2                7.3 +/-    1.85      20.4 +/-    1.85  0.070 / 0.310
G17     17.3           63.6                9.7 +/-    0.44      10.7 +/-    0.44  0.060 / 0.350
G19     304.6          72.1               10.2 +/-    0.70      10.6 +/-    0.70  0.030 / 0.040
G24     315.0          22.7                5.3 +/-    1.42      10.9 +/-    1.42  0.020 / 0.030
G28     80.0           43.4                9.4 +/-    0.75      13.0 +/-    0.75  0.200 / 0.250
G30     156.3          23.0               12.4 +/-    2.10      25.4 +/-    2.10  0.190 / 0.310