PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/29-23:43:10
G02     261.4          79.8               10.4 +/-    0.34      10.6 +/-    0.34  0.060 / 0.040
G05     169.2          20.6               12.8 +/-    1.61      27.6 +/-    1.61  0.070 / 0.040
G06     39.1           56.7               11.2 +/-    0.69      13.1 +/-    0.69  0.080 / 0.110
G12     320.6          53.5                9.4 +/-    1.26      11.4 +/-    1.26  0.080 / 0.130
G17     74.4           19.2                9.4 +/-    1.83      21.1 +/-    1.83  0.390 / 0.360
G19     61.4           35.4                9.8 +/-    0.81      15.4 +/-    0.81  0.360 / 0.410
G24     239.5          31.9               11.0 +/-    0.95      18.5 +/-    0.95  0.060 / 0.030
G25     317.0          16.5                6.1 +/-    2.41      14.6 +/-    2.41  0.060 / 0.040