PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/07-11:43:00
G10     252.2          27.5                5.8 +/-    1.18      10.8 +/-    1.18  0.080 / 0.370
G13     52.5           29.6                2.9 +/-    1.34       5.1 +/-    1.34  0.080 / 0.330
G15     80.1           55.9                6.7 +/-    0.41       7.9 +/-    0.41  0.040 / 0.050
G16     295.6          14.6                3.8 +/-    3.21       9.5 +/-    3.21  0.050 / 0.060
G20     39.9           51.9                3.9 +/-    0.49       4.8 +/-    0.49  0.030 / 0.040
G21     340.3          63.4                4.1 +/-    0.47       4.5 +/-    0.47  0.040 / 0.050
G26     266.5          14.8                3.8 +/-    1.83       9.5 +/-    1.83  0.040 / 0.050
G29     164.4          45.8                6.5 +/-    0.47       8.6 +/-    0.47  0.040 / 0.050