PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/17-04:12:50
G01     60.9           29.9                4.9 +/-    0.91       8.6 +/-    0.91  0.030 / 0.030
G06     180.1          12.0               -0.9 +/-   20.31      -2.4 +/-   20.31  0.040 / 0.040
G07     140.5          25.6                5.7 +/-    1.62      10.9 +/-    1.62  0.120 / 0.110
G11     51.2           30.5                4.6 +/-    0.75       7.9 +/-    0.75  0.100 / 0.120
G13     264.5          37.4                5.8 +/-    1.87       8.7 +/-    1.87  0.100 / 0.080
G15     293.4          17.4                4.0 +/-    0.47       9.5 +/-    0.47  0.100 / 0.100
G17     247.7          75.7                6.8 +/-    0.30       7.0 +/-    0.30  0.050 / 0.050
G19     228.6          50.5                7.1 +/-    2.84       8.9 +/-    2.84  0.040 / 0.050
G28     13.5           60.9                4.5 +/-    1.89       5.0 +/-    1.89  0.060 / 0.090
G30     142.7          60.0                7.8 +/-    0.65       8.8 +/-    0.65  0.070 / 0.130