PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/26-17:57:40
G02     204.2          30.1               12.8 +/-    1.10      22.3 +/-    1.10  0.120 / 0.350
G06     159.3          68.8               10.6 +/-    1.40      11.3 +/-    1.40  0.170 / 0.320
G12     308.0          16.1                9.3 +/-    2.26      22.5 +/-    2.26  0.040 / 0.060
G17     38.2           47.4                9.8 +/-    0.77      12.7 +/-    0.77  0.040 / 0.060
G19     5.8            64.5                9.6 +/-    0.46      10.5 +/-    0.46  0.050 / 0.090
G24     300.4          36.7               10.1 +/-    1.16      15.5 +/-    1.16  0.060 / 0.100
G28     102.4          31.3               10.5 +/-    0.56      17.9 +/-    0.56  0.090 / 0.120