PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/21-04:27:50
G01     109.0          22.7                7.6 +/-    1.46      15.7 +/-    1.46  0.030 / 0.030
G07     99.2           61.3                7.6 +/-    0.53       8.5 +/-    0.53  0.040 / 0.030
G08     42.3           23.6                4.9 +/-    1.79       9.9 +/-    1.79  0.070 / 0.200
G09     173.2          15.0                5.9 +/-    1.73      14.8 +/-    1.73  0.090 / 0.150
G11     99.4           44.5                8.5 +/-    0.68      11.5 +/-    0.68  0.040 / 0.050
G13     312.2          27.2                4.9 +/-    1.59       9.2 +/-    1.59  0.040 / 0.070
G17     203.0          33.3                8.4 +/-    0.88      13.7 +/-    0.88  0.100 / 0.110
G19     206.7          11.2               -1.0 +/-    9.00      -2.6 +/-    9.00  0.070 / 0.080
G28     294.6          55.3                6.8 +/-    1.03       8.1 +/-    1.03  0.050 / 0.070
G30     353.2          73.4                6.2 +/-    0.59       6.4 +/-    0.59  0.060 / 0.080