PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/26-15:27:50
G01     51.5           26.4                8.3 +/-    1.72      15.7 +/-    1.72  0.050 / 0.070
G06     176.7          25.0               10.5 +/-    2.11      20.6 +/-    2.11  0.050 / 0.070
G07     145.7          14.0               10.2 +/-    1.70      26.0 +/-    1.70  0.080 / 0.120
G11     44.8           15.8                5.9 +/-    1.73      14.4 +/-    1.73  0.080 / 0.130
G13     252.0          31.3               10.5 +/-    0.91      18.0 +/-    0.91  0.030 / 0.060
G15     288.0          15.1                6.1 +/-    1.40      15.0 +/-    1.40  0.040 / 0.060
G17     307.4          79.0                8.9 +/-    0.74       9.0 +/-    0.74  0.190 / 0.450
G19     242.4          55.4               10.2 +/-    0.46      12.1 +/-    0.46  0.190 / 0.560
G28     49.8           53.6                8.5 +/-    0.44      10.3 +/-    0.44  0.140 / 0.360
G30     149.3          44.1                9.3 +/-    1.56      12.6 +/-    1.56  0.150 / 0.330