PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/12-11:13:10
G08     269.0          16.4                7.4 +/-    1.64      17.7 +/-    1.64  0.040 / 0.050
G10     66.6           57.3                4.7 +/-    0.63       5.5 +/-    0.63  0.040 / 0.050
G11     310.7          17.5                4.5 +/-    2.06      10.6 +/-    2.06  0.160 / 0.360
G14     269.2          65.0                6.7 +/-    0.89       7.3 +/-    0.89  0.150 / 0.450
G18     311.0          33.4                3.3 +/-    1.45       5.4 +/-    1.45  0.180 / 0.310
G21     155.0          12.0                4.0 +/-    3.86      10.6 +/-    3.86  0.180 / 0.260
G27     228.9          13.5                4.7 +/-    3.84      12.1 +/-    3.84  0.110 / 0.280
G31     176.3          35.2                3.6 +/-    1.36       5.7 +/-    1.36  0.160 / 0.250
G32     354.0          71.8                5.2 +/-    0.36       5.5 +/-    0.36  0.210 / 0.330