PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/20-03:13:10
G10     303.5          54.3                8.4 +/-    1.20      10.0 +/-    1.20  0.090 / 0.090
G14     210.7          14.3               11.0 +/-    2.07      27.9 +/-    2.07  0.110 / 0.100
G15     45.6           24.4                5.7 +/-    2.38      11.3 +/-    2.38  0.050 / 0.030
G20     359.5          65.0                7.7 +/-    0.36       8.5 +/-    0.36  0.060 / 0.040
G21     104.8          72.2                9.3 +/-    0.71       9.7 +/-    0.71  0.050 / 0.030
G24     94.5           27.6                7.1 +/-    0.41      13.1 +/-    0.41  0.040 / 0.030
G27     298.2          35.1                7.3 +/-    1.44      11.5 +/-    1.44  0.200 / 0.450
G32     211.9          32.7                9.5 +/-    2.06      15.8 +/-    2.06  0.170 / 0.540