PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/19-12:28:00
G02     205.3          37.4                8.6 +/-    2.01      13.1 +/-    2.01  0.070 / 0.080
G06     146.2          73.9                6.5 +/-    0.74       6.8 +/-    0.74  0.060 / 0.090
G12     309.5          19.5                5.6 +/-    2.00      12.6 +/-    2.00  0.040 / 0.050
G17     38.1           47.5                4.2 +/-    0.44       5.4 +/-    0.44  0.030 / 0.040
G19     13.7           61.5                4.7 +/-    0.46       5.3 +/-    0.46  0.130 / 0.230
G24     293.7          39.0                4.8 +/-    1.02       7.1 +/-    1.02  0.130 / 0.220
G28     103.1          34.5                4.4 +/-    0.99       7.1 +/-    0.99  0.040 / 0.050