PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-15:13:00
G03     188.8          17.1               10.4 +/-    3.18      24.7 +/-    3.18  0.070 / 0.150
G07     293.5          39.0                8.2 +/-    1.04      12.1 +/-    1.04  0.060 / 0.140
G08     141.5          30.1               12.1 +/-    1.24      21.2 +/-    1.24  0.090 / 0.320
G09     319.5          66.4                5.8 +/-    1.05       6.3 +/-    1.05  0.130 / 0.370
G16     42.0           33.8                6.6 +/-    1.27      10.7 +/-    1.27  0.040 / 0.110
G23     128.0          71.3               11.2 +/-    0.47      11.8 +/-    0.47  0.040 / 0.100
G27     94.8           35.1                9.7 +/-    0.58      15.4 +/-    0.58  0.030 / 0.040
G30     276.7          15.3                9.4 +/-    1.69      23.1 +/-    1.69  0.020 / 0.040