PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/02-23:43:10
G02     297.0          81.6                8.7 +/-    0.56       8.8 +/-    0.56  0.030 / 0.030
G05     167.0          25.8               14.2 +/-    1.69      27.3 +/-    1.69  0.040 / 0.030
G06     39.1           51.0                8.1 +/-    0.35      10.2 +/-    0.35  0.160 / 0.300
G12     319.4          59.3                9.1 +/-    0.85      10.4 +/-    0.85  0.090 / 0.290
G17     78.9           16.0                9.1 +/-    0.89      22.2 +/-    0.89  0.080 / 0.130
G19     66.8           32.0                9.4 +/-    1.07      15.8 +/-    1.07  0.090 / 0.170
G24     234.5          28.3               11.3 +/-    1.94      20.5 +/-    1.94  0.070 / 0.100
G25     317.4          21.4                7.4 +/-    3.32      15.8 +/-    3.32  0.060 / 0.090