PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/07-20:12:40
G02     19.7           64.9                8.3 +/-    1.25       9.1 +/-    1.25  0.070 / 0.070
G05     152.8          51.7               12.3 +/-    0.41      15.2 +/-    0.41  0.080 / 0.080
G06     47.7           24.6                9.1 +/-    2.55      17.9 +/-    2.55  0.040 / 0.040
G12     239.3          78.7                9.7 +/-    0.48       9.9 +/-    0.48  0.050 / 0.050
G19     90.9           15.2               10.1 +/-    1.68      25.1 +/-    1.68  0.250 / 0.570
G24     216.0          10.5               11.3 +/-   17.05      31.3 +/-   17.05  0.140 / 0.370
G25     309.7          44.2                9.8 +/-    1.57      13.3 +/-    1.57  0.030 / 0.020
G29     299.4          20.9                9.6 +/-    3.00      20.7 +/-    3.00  0.030 / 0.030