PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/09-03:57:50
G01     220.0          10.8                5.2 +/-    1.44      14.3 +/-    1.44  0.170 / 0.310
G03     265.4          69.0                2.9 +/-    0.41       3.0 +/-    0.41  0.110 / 0.360
G09     300.0          14.7                1.8 +/-    2.39       4.5 +/-    2.39  0.140 / 0.250
G14     95.0           17.4                3.3 +/-    1.06       7.8 +/-    1.06  0.360 / 0.300
G16     144.1          52.1                7.9 +/-    0.68       9.8 +/-    0.68  0.030 / 0.050
G22     202.7          63.3                6.4 +/-    0.56       7.1 +/-    0.56  0.030 / 0.050
G23     312.9          42.3                4.0 +/-    1.76       5.5 +/-    1.76  0.040 / 0.060
G26     87.8           56.5                5.4 +/-    1.31       6.4 +/-    1.31  0.040 / 0.070
G31     47.7           28.2                0.9 +/-    0.92       1.6 +/-    0.92  0.110 / 0.400