PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/25-04:42:40
G01     285.2          41.0               -0.7 +/-    0.98      -1.1 +/-    0.98  0.050 / 0.060
G03     312.9          18.2                3.8 +/-    2.93       8.7 +/-    2.93  0.030 / 0.050
G10     122.7          26.5                4.2 +/-    0.97       8.0 +/-    0.97  0.050 / 0.050
G11     258.4          25.7                5.6 +/-    4.06      10.8 +/-    4.06  0.040 / 0.050
G14     32.3           55.2                3.2 +/-    1.51       3.8 +/-    1.51  0.050 / 0.050
G22     314.3          42.0                4.2 +/-    0.91       6.0 +/-    0.91  0.060 / 0.060
G25     58.9           17.1                3.4 +/-    1.30       8.0 +/-    1.30  0.090 / 0.130
G26     156.1          15.2                5.3 +/-    2.86      13.2 +/-    2.86  0.090 / 0.120
G31     110.9          80.6                4.6 +/-    0.64       4.6 +/-    0.64  0.040 / 0.040
G32     53.4           40.9                2.0 +/-    0.96       2.8 +/-    0.96  0.040 / 0.050