PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/20-05:28:10
G01     79.9           32.0                4.2 +/-    1.24       7.1 +/-    1.24  0.030 / 0.030
G07     130.6          39.7                7.2 +/-    0.78      10.5 +/-    0.78  0.030 / 0.040
G11     63.8           40.1                4.5 +/-    1.29       6.5 +/-    1.29  0.110 / 0.190
G13     285.5          38.8                3.4 +/-    2.78       5.1 +/-    2.78  0.090 / 0.210
G15     308.6          13.9                1.7 +/-    2.77       4.3 +/-    2.77  0.040 / 0.050
G17     218.4          60.3                2.1 +/-    0.95       2.4 +/-    0.95  0.040 / 0.050
G19     216.6          35.4                8.4 +/-    1.98      13.2 +/-    1.98  0.050 / 0.060
G28     343.2          61.4                4.9 +/-    0.41       5.5 +/-    0.41  0.060 / 0.040
G30     119.2          74.9                6.8 +/-    0.48       7.1 +/-    0.48  0.080 / 0.110