PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/15-04:12:40
G01     65.1           31.0                5.6 +/-    0.78       9.6 +/-    0.78  0.030 / 0.030
G07     138.5          29.1                8.3 +/-    1.58      14.8 +/-    1.58  0.030 / 0.030
G11     53.6           33.2                3.7 +/-    1.39       6.1 +/-    1.39  0.140 / 0.250
G13     269.3          38.4                5.0 +/-    2.66       7.5 +/-    2.66  0.110 / 0.230
G15     297.1          17.1                4.0 +/-    1.41       9.5 +/-    1.41  0.110 / 0.130
G17     237.1          72.6                7.0 +/-    0.65       7.2 +/-    0.65  0.110 / 0.080
G19     225.2          47.0                5.9 +/-    2.10       7.7 +/-    2.10  0.050 / 0.060
G28     6.2            61.3                4.3 +/-    0.91       4.8 +/-    0.91  0.050 / 0.060
G30     139.1          63.8                7.2 +/-    0.56       7.9 +/-    0.56  0.060 / 0.120