PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/23-00:57:40
G02     4.8            73.3                7.5 +/-    0.38       7.8 +/-    0.38  0.090 / 0.110
G05     160.1          40.4               10.8 +/-    1.06      15.6 +/-    1.06  0.090 / 0.110
G06     42.2           37.4                7.2 +/-    0.76      11.0 +/-    0.76  0.190 / 0.360
G12     301.5          74.0                8.5 +/-    0.57       8.8 +/-    0.57  0.120 / 0.400
G19     80.4           23.1                9.1 +/-    0.85      18.5 +/-    0.85  0.030 / 0.030
G24     222.7          18.0               11.6 +/-    1.95      26.8 +/-    1.95  0.030 / 0.030
G25     315.4          35.2                8.7 +/-    1.14      13.8 +/-    1.14  0.040 / 0.070
G29     292.1          16.0                7.6 +/-    1.94      18.4 +/-    1.94  0.050 / 0.060