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                7.3 +/-    0.86      17.0 +/-    0.86  0.130 / 0.190
G10     62.1           58.4                7.2 +/-    0.57       8.3 +/-    0.57  0.170 / 0.250
G11     312.7          15.6                4.1 +/-    1.34      10.1 +/-    1.34  0.080 / 0.080
G14     266.9          65.3                8.1 +/-    0.69       8.8 +/-    0.69  0.060 / 0.080
G21     154.0          12.4                8.4 +/-    1.95      22.1 +/-    1.95  0.040 / 0.050
G24     39.7           10.0                6.5 +/-    2.19      18.1 +/-    2.19  0.040 / 0.040
G27     230.3          15.0                7.4 +/-    2.51      18.5 +/-    2.51  0.140 / 0.230
G31     177.8          31.7                9.9 +/-    1.21      16.7 +/-    1.21  0.230 / 0.280
G32     344.1          73.5                6.8 +/-    0.41       7.1 +/-    0.41  0.110 / 0.140