PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/06-06:28:10
G02     19.0           66.1                1.3 +/-    0.69       1.4 +/-    0.69  0.030 / 0.030
G05     155.5          48.7                5.7 +/-    1.13       7.3 +/-    1.13  0.030 / 0.040
G06     45.2           31.1                0.5 +/-    0.65       0.8 +/-    0.65  0.040 / 0.050
G12     258.4          79.1                3.0 +/-    1.28       3.1 +/-    1.28  0.030 / 0.050
G19     87.7           19.0                3.5 +/-    1.10       7.8 +/-    1.10  0.060 / 0.100
G25     309.8          46.0                2.6 +/-    2.33       3.4 +/-    2.33  0.050 / 0.070
G29     298.6          21.3                2.5 +/-    1.54       5.3 +/-    1.54  0.120 / 0.190