PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/20-07:27:40
G02     199.3          19.5                5.8 +/-    2.36      13.0 +/-    2.36  0.120 / 0.240
G06     170.1          51.4                8.6 +/-    0.64      10.6 +/-    0.64  0.130 / 0.300
G13     227.4          15.1                6.1 +/-    4.26      15.1 +/-    4.26  0.050 / 0.070
G17     19.5           61.6                0.3 +/-    0.61       0.4 +/-    0.61  0.050 / 0.080
G19     321.3          72.1                6.4 +/-    0.28       6.7 +/-    0.28  0.050 / 0.030
G24     311.9          26.5                4.0 +/-    0.88       7.6 +/-    0.88  0.060 / 0.040
G28     78.0           47.9                7.7 +/-    2.54       9.9 +/-    2.54  0.040 / 0.030
G30     158.0          20.0                5.6 +/-    1.07      12.2 +/-    1.07  0.040 / 0.030