PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/13-21:57:50
G10     287.5          48.3                8.3 +/-    1.34      10.7 +/-    1.34  0.070 / 0.110
G15     49.3           39.9                7.6 +/-    0.69      11.0 +/-    0.69  0.060 / 0.130
G20     334.9          65.2                7.9 +/-    0.66       8.6 +/-    0.66  0.040 / 0.050
G21     67.4           77.0               11.0 +/-    0.72      11.3 +/-    0.72  0.040 / 0.050
G24     102.4          23.4               10.0 +/-    1.63      20.4 +/-    1.63  0.080 / 0.200
G27     308.2          29.9                7.3 +/-    1.83      12.7 +/-    1.83  0.070 / 0.230
G29     168.7          14.7               13.6 +/-    1.80      34.2 +/-    1.80  0.060 / 0.050
G32     207.7          26.1               11.1 +/-    2.24      21.1 +/-    2.24  0.050 / 0.060