PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/27-01:27:30
G02     31.6           56.3                9.4 +/-    1.17      11.0 +/-    1.17  0.070 / 0.060
G05     140.3          60.6               12.4 +/-    0.69      14.1 +/-    0.69  0.080 / 0.050
G06     51.4           19.8                8.5 +/-    3.04      18.8 +/-    3.04  0.030 / 0.030
G12     209.7          72.2               12.0 +/-    0.59      12.5 +/-    0.59  0.030 / 0.030
G19     98.0           10.6               11.9 +/-    1.41      32.9 +/-    1.41  0.030 / 0.040
G25     299.5          52.5               10.4 +/-    1.90      12.8 +/-    1.90  0.030 / 0.030
G29     307.5          29.8                9.0 +/-    0.88      15.8 +/-    0.88  0.150 / 0.250