PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/02-21:43:10
G01     42.5           18.2                8.9 +/-    0.97      20.5 +/-    0.97  0.080 / 0.180
G06     175.0          37.0               16.1 +/-    1.23      24.7 +/-    1.23  0.080 / 0.160
G13     240.1          23.6               14.7 +/-    1.58      29.6 +/-    1.58  0.080 / 0.130
G15     273.3          13.1               13.3 +/-    1.21      34.6 +/-    1.21  0.090 / 0.130
G17     342.5          73.9               13.2 +/-    0.78      13.7 +/-    0.78  0.140 / 0.230
G19     268.7          66.8               12.8 +/-    0.88      13.8 +/-    0.88  0.130 / 0.240
G24     317.3          17.3               11.2 +/-    3.20      26.3 +/-    3.20  0.040 / 0.070
G28     68.8           47.8               10.8 +/-    0.34      14.1 +/-    0.34  0.040 / 0.070
G30     153.6          28.8               15.0 +/-    1.21      26.9 +/-    1.21  0.060 / 0.110