PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/27-21:43:00
G01     82.3           32.7               11.4 +/-    1.22      19.0 +/-    1.22  0.040 / 0.080
G07     131.0          34.7               15.0 +/-    0.68      24.0 +/-    0.68  0.050 / 0.070
G11     60.4           36.1               11.8 +/-    0.68      18.4 +/-    0.68  0.050 / 0.120
G13     286.4          38.2               16.1 +/-    0.78      24.1 +/-    0.78  0.070 / 0.110
G15     310.2          12.9               10.8 +/-    1.85      28.2 +/-    1.85  0.050 / 0.040
G17     218.9          61.3               16.9 +/-    1.22      19.0 +/-    1.22  0.040 / 0.040
G18     55.1           20.7               11.2 +/-    1.92      24.1 +/-    1.92  0.130 / 0.120
G19     217.2          32.8               17.3 +/-    1.44      28.6 +/-    1.44  0.130 / 0.110
G28     352.8          61.6               12.0 +/-    0.74      13.4 +/-    0.74  0.030 / 0.030
G30     121.7          70.3               15.0 +/-    0.84      15.9 +/-    0.84  0.030 / 0.030