PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/04-15:57:30
G10     248.0          23.8                8.8 +/-    1.06      17.6 +/-    1.06  0.040 / 0.060
G13     57.4           32.6                7.2 +/-    1.14      12.0 +/-    1.14  0.050 / 0.050
G15     90.4           57.0               11.1 +/-    0.98      13.0 +/-    0.98  0.180 / 0.360
G16     303.3          13.5                4.9 +/-    1.14      12.6 +/-    1.14  0.150 / 0.400
G18     266.3          55.7                8.5 +/-    1.73      10.1 +/-    1.73  0.040 / 0.110
G20     38.6           53.5                7.9 +/-    0.70       9.5 +/-    0.70  0.070 / 0.130
G21     337.1          61.7                7.4 +/-    0.58       8.3 +/-    0.58  0.030 / 0.040
G26     273.7          16.4                7.8 +/-    1.49      18.9 +/-    1.49  0.040 / 0.040
G29     161.5          48.5               10.9 +/-    0.69      14.0 +/-    0.69  0.120 / 0.320