PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/28-21:27:40
G02     37.5           51.2                9.9 +/-    1.51      12.3 +/-    1.51  0.040 / 0.050
G05     125.6          66.4               11.7 +/-    0.50      12.7 +/-    0.50  0.050 / 0.050
G06     56.5           11.8                7.2 +/-    1.99      19.3 +/-    1.99  0.050 / 0.060
G12     196.0          63.3               11.0 +/-    0.47      12.1 +/-    0.47  0.060 / 0.060
G25     288.4          56.0                6.8 +/-    1.82       8.0 +/-    1.82  0.030 / 0.040
G29     311.8          33.4                8.6 +/-    1.20      14.0 +/-    1.20  0.030 / 0.040