PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/29-16:12:50
G01     51.2           25.9                9.4 +/-    2.42      18.0 +/-    2.42  0.130 / 0.250
G06     177.9          24.0               11.1 +/-    1.90      22.2 +/-    1.90  0.100 / 0.250
G07     145.3          10.7                9.0 +/-    1.86      24.7 +/-    1.86  0.230 / 0.340
G11     44.3           13.5                7.1 +/-    1.94      18.2 +/-    1.94  0.160 / 0.320
G13     254.2          31.1               10.3 +/-    2.51      17.7 +/-    2.51  0.070 / 0.150
G15     288.5          15.3                8.7 +/-    1.92      21.4 +/-    1.92  0.060 / 0.150
G17     321.2          79.2               10.8 +/-    0.40      10.9 +/-    0.40  0.040 / 0.060
G19     245.9          61.0               11.1 +/-    0.94      12.5 +/-    0.94  0.040 / 0.050
G28     50.5           53.3               11.5 +/-    0.74      14.0 +/-    0.74  0.030 / 0.020
G30     149.1          45.3               10.8 +/-    0.57      14.5 +/-    0.57  0.020 / 0.020