PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/02-04:28:20
G01     219.2          10.1                5.9 +/-    1.93      16.5 +/-    1.93  0.030 / 0.050
G03     262.4          69.0                5.0 +/-    0.62       5.4 +/-    0.62  0.030 / 0.050
G09     300.7          15.7                1.7 +/-    2.59       4.2 +/-    2.59  0.150 / 0.400
G14     95.9           16.7                4.6 +/-    1.85      10.9 +/-    1.85  0.140 / 0.340
G16     142.3          53.3                8.2 +/-    0.65      10.0 +/-    0.65  0.180 / 0.340
G22     201.3          62.2                8.0 +/-    0.75       8.9 +/-    0.75  0.200 / 0.370
G23     313.7          43.1                3.7 +/-    1.36       5.1 +/-    1.36  0.090 / 0.120
G26     85.1           56.2                5.0 +/-    0.37       5.9 +/-    0.37  0.070 / 0.130
G31     48.3           26.9                2.3 +/-    1.51       4.4 +/-    1.51  0.040 / 0.060