PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/24-15:57:50
G01     67.6           32.2               10.9 +/-    1.05      18.2 +/-    1.05  0.120 / 0.190
G07     138.5          25.3               10.7 +/-    1.71      20.7 +/-    1.71  0.090 / 0.240
G11     51.0           26.1                7.9 +/-    2.50      15.1 +/-    2.50  0.030 / 0.030
G13     273.6          36.6               11.2 +/-    1.90      17.3 +/-    1.90  0.030 / 0.030
G15     303.8          14.2                8.0 +/-    1.88      20.3 +/-    1.88  0.050 / 0.110
G17     240.9          73.9               11.9 +/-    0.54      12.3 +/-    0.54  0.060 / 0.130
G19     226.3          46.4               13.3 +/-    2.04      17.6 +/-    2.04  0.060 / 0.110
G28     23.9           58.6               11.5 +/-    3.06      13.3 +/-    3.06  0.070 / 0.100
G30     137.1          62.0               10.8 +/-    0.33      12.1 +/-    0.33  0.050 / 0.070