PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/12-08:27:40
G02     315.5          81.9                4.9 +/-    0.80       5.0 +/-    0.80  0.100 / 0.130
G05     169.1          24.2                5.7 +/-    1.09      11.4 +/-    1.09  0.080 / 0.120
G06     39.6           47.7                4.3 +/-    0.66       5.5 +/-    0.66  0.030 / 0.030
G12     319.6          64.8                4.5 +/-    1.10       5.0 +/-    1.10  0.030 / 0.030
G17     79.2           15.3                5.1 +/-    1.59      12.6 +/-    1.59  0.040 / 0.040
G19     68.1           30.0                5.3 +/-    0.88       9.3 +/-    0.88  0.040 / 0.030
G24     236.5          28.3                6.5 +/-    1.06      11.7 +/-    1.06  0.070 / 0.100
G25     317.2          21.5                2.5 +/-    2.17       5.3 +/-    2.17  0.060 / 0.100