PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/15-14:57:50
G08     269.1          17.5                6.9 +/-    1.69      16.1 +/-    1.69  0.170 / 0.250
G10     62.1           58.4                3.7 +/-    0.54       4.2 +/-    0.54  0.160 / 0.220
G11     312.7          15.6                4.7 +/-    2.63      11.4 +/-    2.63  0.100 / 0.480
G14     266.9          65.3                5.1 +/-    0.84       5.5 +/-    0.84  0.090 / 0.440
G21     154.0          12.4                8.1 +/-    1.41      21.4 +/-    1.41  0.040 / 0.090
G27     230.3          15.0                7.0 +/-    1.64      17.5 +/-    1.64  0.060 / 0.110
G31     177.8          31.7                9.4 +/-    1.41      15.8 +/-    1.41  0.040 / 0.060
G32     344.1          73.5                5.6 +/-    1.00       5.8 +/-    1.00  0.040 / 0.060