PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/07-15:12:50
G01     99.7           28.9               10.2 +/-    1.27      18.2 +/-    1.27  0.060 / 0.130
G07     116.6          52.8                9.7 +/-    0.60      11.9 +/-    0.60  0.050 / 0.160
G08     41.7           14.3                8.0 +/-    2.08      20.3 +/-    2.08  0.040 / 0.030
G11     78.8           42.1                9.6 +/-    1.19      13.5 +/-    1.19  0.030 / 0.020
G13     303.3          32.7                8.8 +/-    1.16      14.6 +/-    1.16  0.080 / 0.120
G17     209.3          44.5               10.5 +/-    0.70      14.2 +/-    0.70  0.100 / 0.160
G18     72.5           24.7               10.5 +/-    1.26      20.6 +/-    1.26  0.090 / 0.110
G19     211.6          17.0                9.8 +/-    1.20      23.3 +/-    1.20  0.100 / 0.090
G28     332.1          61.8                8.1 +/-    0.44       9.1 +/-    0.44  0.030 / 0.030
G30     59.8           80.0                9.7 +/-    0.50       9.8 +/-    0.50  0.030 / 0.040