PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/04-20:42:50
G01     62.5           31.4               13.3 +/-    1.03      22.7 +/-    1.03  0.100 / 0.410
G07     141.3          24.8               15.5 +/-    0.62      30.4 +/-    0.62  0.110 / 0.320
G11     49.9           26.5               11.9 +/-    1.38      22.5 +/-    1.38  0.050 / 0.110
G13     265.6          35.9               15.1 +/-    1.55      23.6 +/-    1.55  0.060 / 0.110
G15     296.1          16.2               13.6 +/-    3.26      33.0 +/-    3.26  0.060 / 0.160
G17     246.2          71.1               16.4 +/-    0.92      17.2 +/-    0.92  0.070 / 0.160
G18     44.1           14.6                9.9 +/-    1.85      24.8 +/-    1.85  0.040 / 0.060
G19     230.3          47.5               16.2 +/-    1.89      21.1 +/-    1.89  0.040 / 0.060
G28     32.6           57.2               13.2 +/-    0.57      15.3 +/-    0.57  0.090 / 0.210
G30     141.9          53.3               14.4 +/-    0.73      17.5 +/-    0.73  0.080 / 0.190