PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/02-18:27:30
G03     184.8          10.0               14.1 +/-    4.47      39.3 +/-    4.47  0.040 / 0.090
G07     300.5          42.8               12.1 +/-    1.12      16.8 +/-    1.12  0.040 / 0.110
G08     138.5          35.1               14.7 +/-    0.91      23.4 +/-    0.91  0.070 / 0.110
G09     314.4          72.5               11.4 +/-    0.53      11.9 +/-    0.53  0.070 / 0.140
G16     41.6           28.4                9.9 +/-    0.97      18.0 +/-    0.97  0.030 / 0.050
G23     137.9          65.6               13.3 +/-    0.80      14.5 +/-    0.80  0.030 / 0.050
G27     85.6           36.7               11.7 +/-    1.06      18.0 +/-    1.06  0.170 / 0.380
G30     282.6          20.7               10.8 +/-    2.43      23.3 +/-    2.43  0.170 / 0.320