PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/28-20:42:30
G10     279.6          45.0                8.6 +/-    1.65      11.5 +/-    1.65  0.030 / 0.040
G15     52.5           44.5                9.4 +/-    0.60      12.8 +/-    0.60  0.030 / 0.040
G20     320.5          64.1                9.1 +/-    0.65      10.0 +/-    0.65  0.100 / 0.150
G21     40.9           76.8                9.3 +/-    0.93       9.5 +/-    0.93  0.080 / 0.130
G24     108.1          20.4               10.0 +/-    1.01      21.7 +/-    1.01  0.130 / 0.210
G27     313.2          25.8                8.7 +/-    1.08      16.7 +/-    1.08  0.110 / 0.180
G29     168.6          20.5               10.1 +/-    2.14      22.1 +/-    2.14  0.030 / 0.040
G32     206.0          20.0               12.8 +/-    2.54      28.1 +/-    2.54  0.040 / 0.040