PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/10-21:57:30
G10     280.3          45.3               12.6 +/-    1.75      16.9 +/-    1.75  0.080 / 0.150
G15     52.5           44.9               12.4 +/-    0.93      16.8 +/-    0.93  0.100 / 0.130
G20     321.7          64.2               11.5 +/-    0.56      12.6 +/-    0.56  0.120 / 0.190
G21     41.5           77.0               12.9 +/-    0.43      13.2 +/-    0.43  0.110 / 0.210
G24     107.9          20.7               13.6 +/-    1.44      29.4 +/-    1.44  0.040 / 0.040
G27     312.6          26.4               11.1 +/-    1.26      21.1 +/-    1.26  0.030 / 0.040
G29     168.8          20.1               16.4 +/-    2.25      36.0 +/-    2.25  0.040 / 0.040
G32     206.1          20.8               19.5 +/-    3.10      42.1 +/-    3.10  0.040 / 0.040