PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/22-14:42:40
G08     317.0          14.0                1.8 +/-    3.17       4.6 +/-    3.17  0.050 / 0.060
G10     316.0          56.8                2.7 +/-    1.16       3.2 +/-    1.16  0.050 / 0.060
G14     214.5          22.3                5.6 +/-    0.98      11.7 +/-    0.98  0.100 / 0.080
G15     45.7           16.1                2.8 +/-    1.84       6.7 +/-    1.84  0.080 / 0.090
G18     28.9           61.4                4.3 +/-    0.96       4.8 +/-    0.96  0.140 / 0.280
G20     78.7           14.0                4.2 +/-    2.56      10.6 +/-    2.56  0.130 / 0.350
G21     125.0          61.1                5.3 +/-    0.52       6.0 +/-    0.52  0.040 / 0.040
G24     84.7           30.0                4.8 +/-    0.94       8.4 +/-    0.94  0.040 / 0.030
G27     284.4          37.9                6.5 +/-    2.23       9.8 +/-    2.23  0.100 / 0.180
G32     217.2          44.2                6.0 +/-    1.03       8.2 +/-    1.03  0.160 / 0.280