PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/19-08:42:40
G01     109.6          24.0                5.8 +/-    1.59      11.6 +/-    1.59  0.050 / 0.060
G07     103.3          58.7                6.5 +/-    0.48       7.5 +/-    0.48  0.040 / 0.060
G08     42.1           21.3                2.5 +/-    1.13       5.3 +/-    1.13  0.060 / 0.130
G09     174.8          15.5                6.5 +/-    1.72      16.1 +/-    1.72  0.060 / 0.160
G11     91.8           41.4                6.3 +/-    0.43       8.9 +/-    0.43  0.050 / 0.080
G13     312.9          25.3                3.8 +/-    1.68       7.3 +/-    1.68  0.060 / 0.110
G17     204.2          37.1                6.6 +/-    1.81      10.0 +/-    1.81  0.030 / 0.040
G19     208.2          11.9                4.1 +/-    9.25      11.0 +/-    9.25  0.030 / 0.030
G28     313.6          60.5                4.3 +/-    0.82       4.8 +/-    0.82  0.070 / 0.170
G30     10.7           76.0                4.5 +/-    0.87       4.6 +/-    0.87  0.070 / 0.170