PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/17-03:42:10
G02     46.1           43.8                4.9 +/-    1.18       6.8 +/-    1.18  0.040 / 0.020
G05     99.3           68.8                5.8 +/-    0.72       6.2 +/-    0.72  0.040 / 0.020
G12     190.1          52.9                6.8 +/-    0.61       8.3 +/-    0.61  0.030 / 0.010
G20     210.1          14.1                4.8 +/-    1.69      12.3 +/-    1.69  0.040 / 0.010
G25     273.2          57.9                3.9 +/-    3.03       4.5 +/-    3.03  0.200 / 0.440
G29     316.4          38.2                5.4 +/-    1.22       8.1 +/-    1.22  0.150 / 0.400