PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/04-23:42:40
G02     319.4          81.0                7.6 +/-    0.68       7.7 +/-    0.68  0.090 / 0.170
G05     165.6          28.9               12.0 +/-    0.62      21.6 +/-    0.62  0.120 / 0.220
G06     39.5           47.7                7.5 +/-    0.72       9.7 +/-    0.72  0.040 / 0.040
G12     317.8          62.7                8.5 +/-    1.51       9.4 +/-    1.51  0.050 / 0.030
G17     81.5           14.2                8.2 +/-    1.98      20.7 +/-    1.98  0.110 / 0.170
G19     69.8           29.9                8.9 +/-    0.86      15.5 +/-    0.86  0.120 / 0.170
G24     231.8          26.1               12.0 +/-    1.42      22.8 +/-    1.42  0.030 / 0.050
G25     317.4          24.2                8.2 +/-    3.64      16.3 +/-    3.64  0.030 / 0.050