PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/22-16:42:40
G02     61.6           31.2                8.8 +/-    0.61      15.0 +/-    0.61  0.030 / 0.030
G05     54.8           60.2                8.0 +/-    0.68       9.1 +/-    0.68  0.030 / 0.040
G12     182.7          28.4               10.0 +/-    1.51      18.1 +/-    1.51  0.080 / 0.360
G13     123.7          17.3               11.8 +/-    1.49      27.7 +/-    1.49  0.080 / 0.330
G15     161.9          15.4               12.4 +/-    2.25      30.5 +/-    2.25  0.070 / 0.350
G21     274.4          18.7                8.1 +/-    1.68      18.4 +/-    1.68  0.110 / 0.430
G25     232.9          49.6                9.1 +/-    0.65      11.5 +/-    0.65  0.110 / 0.130
G29     330.7          57.3                6.1 +/-    0.73       7.1 +/-    0.73  0.070 / 0.120