PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/19-03:27:50
G01     320.3          13.5                8.0 +/-    2.81      20.5 +/-    2.81  0.030 / 0.020
G08     260.7          15.9               11.6 +/-    1.13      28.1 +/-    1.13  0.020 / 0.020
G10     69.3           57.0                9.5 +/-    0.80      11.1 +/-    0.80  0.200 / 0.580
G11     306.2          22.1               10.3 +/-    1.34      21.6 +/-    1.34  0.160 / 0.490
G14     284.3          70.1                8.8 +/-    0.61       9.3 +/-    0.61  0.190 / 0.360
G18     96.2           33.9                8.4 +/-    1.04      13.7 +/-    1.04  0.160 / 0.310
G21     154.8          10.0                5.8 +/-    3.63      16.3 +/-    3.63  0.020 / 0.030
G27     226.6          11.9               10.7 +/-    1.47      28.5 +/-    1.47  0.030 / 0.030
G31     177.9          35.2                9.8 +/-    1.36      15.5 +/-    1.36  0.040 / 0.050
G32     349.3          71.8                9.7 +/-    0.89      10.2 +/-    0.89  0.040 / 0.050