PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/16-16:58:00
G02     205.8          39.8               13.1 +/-    0.84      19.1 +/-    0.84  0.040 / 0.030
G06     144.5          75.1               11.0 +/-    0.94      11.3 +/-    0.94  0.040 / 0.050
G12     309.9          18.9                9.1 +/-    2.24      20.7 +/-    2.24  0.070 / 0.150
G17     39.0           47.0                8.4 +/-    1.42      11.0 +/-    1.42  0.060 / 0.160
G19     15.6           60.6                9.4 +/-    0.71      10.6 +/-    0.71  0.080 / 0.160
G24     290.7          40.2                9.7 +/-    6.76      14.0 +/-    6.76  0.080 / 0.140
G28     105.4          32.2                9.0 +/-    0.72      15.0 +/-    0.72  0.040 / 0.070