PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/16-15:27:40
G01     71.2           33.0               10.3 +/-    1.45      17.0 +/-    1.45  0.040 / 0.020
G07     137.2          31.4               13.7 +/-    1.10      23.4 +/-    1.10  0.040 / 0.030
G11     53.6           30.5                9.1 +/-    1.70      15.7 +/-    1.70  0.070 / 0.110
G13     274.7          37.7               10.6 +/-    2.43      16.0 +/-    2.43  0.050 / 0.080
G15     305.0          13.9                7.8 +/-    1.52      19.9 +/-    1.52  0.090 / 0.230
G17     232.8          68.7               12.3 +/-    0.37      13.1 +/-    0.37  0.090 / 0.230
G18     49.1           18.2                9.3 +/-    2.21      21.4 +/-    2.21  0.050 / 0.120
G19     223.8          38.8               12.2 +/-    1.74      18.1 +/-    1.74  0.060 / 0.090
G28     18.8           59.4               12.1 +/-    1.36      13.8 +/-    1.36  0.060 / 0.070
G30     135.2          63.0               12.4 +/-    0.70      13.7 +/-    0.70  0.040 / 0.090