PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/12-17:12:50
G02     207.7          42.3               12.5 +/-    0.93      17.6 +/-    0.93  0.060 / 0.070
G06     129.0          78.2               12.1 +/-    0.28      12.3 +/-    0.28  0.050 / 0.080
G12     313.4          24.4                8.7 +/-    0.84      17.2 +/-    0.84  0.050 / 0.060
G17     47.7           39.4                9.6 +/-    1.17      14.1 +/-    1.17  0.060 / 0.060
G19     24.3           57.1               11.0 +/-    1.40      12.9 +/-    1.40  0.090 / 0.120
G24     287.4          41.0               15.4 +/-    1.99      22.0 +/-    1.99  0.060 / 0.120
G28     112.4          23.7               10.0 +/-    2.00      20.2 +/-    2.00  0.040 / 0.070