PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/13-22:58:10
G02     296.0          81.5               11.5 +/-    0.98      11.7 +/-    0.98  0.150 / 0.340
G05     167.0          25.8               20.3 +/-    1.24      39.0 +/-    1.24  0.130 / 0.300
G06     39.2           50.4               10.8 +/-    0.90      13.6 +/-    0.90  0.090 / 0.100
G12     319.4          59.4               11.9 +/-    0.83      13.6 +/-    0.83  0.080 / 0.110
G17     78.7           16.4               10.2 +/-    3.01      24.6 +/-    3.01  0.030 / 0.030
G19     66.9           31.8               12.1 +/-    1.38      20.4 +/-    1.38  0.040 / 0.030
G24     234.7          28.3               16.2 +/-    1.55      29.5 +/-    1.55  0.040 / 0.030
G25     317.4          21.1                8.0 +/-    2.07      17.1 +/-    2.07  0.040 / 0.040