PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/12-04:58:00
G01     50.2           25.0                4.7 +/-    1.65       9.3 +/-    1.65  0.040 / 0.050
G06     177.4          22.5                6.5 +/-    1.34      13.5 +/-    1.34  0.040 / 0.050
G07     145.1          15.1                6.9 +/-    3.10      17.0 +/-    3.10  0.130 / 0.270
G11     46.2           21.3                3.8 +/-    2.90       8.0 +/-    2.90  0.160 / 0.220
G13     251.2          32.6                6.6 +/-    1.79      10.9 +/-    1.79  0.230 / 0.260
G15     282.7          16.7                5.4 +/-    1.94      12.8 +/-    1.94  0.250 / 0.370
G17     304.9          79.8                7.4 +/-    0.73       7.5 +/-    0.73  0.050 / 0.050
G19     242.8          60.5                7.6 +/-    0.96       8.6 +/-    0.96  0.050 / 0.040
G28     34.7           58.7                6.5 +/-    1.77       7.5 +/-    1.77  0.050 / 0.040
G30     149.9          48.1                8.1 +/-    0.48      10.4 +/-    0.48  0.050 / 0.030